Update Rust to v1.55.0

.github/workflows/ci.yml

@@ -51,8 +51,8 @@ jobs:
         set -euo pipefail
 
         # Install the appropriate version of Rust.
-        rustup toolchain install 1.53.0 # [ref:rust_1_53_0]
-        rustup default 1.53.0 # [ref:rust_1_53_0]
+        rustup toolchain install 1.55.0 # [ref:rust_1_55_0]
+        rustup default 1.55.0 # [ref:rust_1_55_0]
 
         # Build and test.
         RUSTFLAGS='--codegen target-feature=+crt-static' cargo build \
@@ -75,8 +75,8 @@ jobs:
         set -euo pipefail
 
         # Install the appropriate version of Rust.
-        rustup toolchain install 1.53.0 # [ref:rust_1_53_0]
-        rustup default 1.53.0 # [ref:rust_1_53_0]
+        rustup toolchain install 1.55.0 # [ref:rust_1_55_0]
+        rustup default 1.55.0 # [ref:rust_1_55_0]
 
         # Build and test.
         cargo build --locked --release --target x86_64-apple-darwin

src/run.rs

@@ -324,7 +324,7 @@ fn space_usage() -> io::Result<Byte> {
         .and_then(|output| {
             for line in output.lines() {
                 // Parse the line as a space record.
-                if let Ok(space_record) = serde_json::from_str::<SpaceRecord>(&line) {
+                if let Ok(space_record) = serde_json::from_str::<SpaceRecord>(line) {
                     // Return early if we found the record we're looking for.
                     if space_record.r#type == "Images" {
                         return Byte::from_str(&space_record.size).map_err(|_| {
@@ -417,7 +417,7 @@ fn parse_docker_date(timestamp: &str) -> io::Result<Duration> {
 
     // Parse the date and convert it into a duration since the UNIX epoch.
     let duration =
-        match DateTime::parse_from_str(&timestamp_without_timezone_triad, "%Y-%m-%d %H:%M:%S %z") {
+        match DateTime::parse_from_str(timestamp_without_timezone_triad, "%Y-%m-%d %H:%M:%S %z") {
             Ok(datetime) => {
                 datetime.signed_duration_since::<chrono::offset::Utc>(DateTime::from(UNIX_EPOCH))
             }
@@ -626,7 +626,7 @@ fn vacuum(
         // Start deleting images, beginning with the least recently used.
         for (image_id, _) in sorted_image_nodes {
             // Delete the image.
-            if let Err(error) = delete_image(&image_id) {
+            if let Err(error) = delete_image(image_id) {
                 // The deletion failed. Just log the error and proceed.
                 error!("{}", error);
             } else {
@@ -678,7 +678,7 @@ pub fn run(settings: &Settings, state: &mut State, first_run: &mut bool) -> io::
 
     // Run the main vacuum logic.
     vacuum(state, *first_run, settings.threshold, &settings.keep)?;
-    state::save(&state)?;
+    state::save(state)?;
     *first_run = false;
 
     // Spawn `docker events --format '{{json .}}'`.
@@ -757,7 +757,7 @@ pub fn run(settings: &Settings, state: &mut State, first_run: &mut bool) -> io::
         vacuum(state, *first_run, settings.threshold, &settings.keep)?;
 
         // Persist the state.
-        state::save(&state)?;
+        state::save(state)?;
 
         // Inform the user that we're done for now.
         info!("Going back to sleep\u{2026}");

toast.yml

@@ -17,8 +17,8 @@ command_prefix: |
   cargo-offline () { cargo --frozen --offline "$@"; }
 
   # Use this wrapper for formatting code or checking that code is formatted. We use a nightly Rust
-  # version for the `trailing_comma` formatting option [tag:rust_fmt_nightly_2021_06_09].
-  cargo-fmt () { cargo +nightly-2021-06-09 --frozen --offline fmt --all -- "$@"; }
+  # version for the `trailing_comma` formatting option [tag:rust_fmt_nightly_2021_09_08].
+  cargo-fmt () { cargo +nightly-2021-09-08 --frozen --offline fmt --all -- "$@"; }
 tasks:
   install_packages:
     description: Install system packages.
@@ -70,18 +70,18 @@ tasks:
       - install_packages
       - create_user
     command: |
-      # Install stable Rust. [tag:rust_1_53_0]
+      # Install stable Rust. [tag:rust_1_55_0]
       curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- \
         -y \
-        --default-toolchain 1.53.0 \
+        --default-toolchain 1.55.0 \
         --profile minimal \
         --component clippy
 
       # Add Rust tools to `$PATH`.
       . "$HOME/.cargo/env"
 
-      # Install nightly Rust [ref:rust_fmt_nightly_2021_06_09].
-      rustup toolchain install nightly-2021-06-09 --profile minimal --component rustfmt
+      # Install nightly Rust [ref:rust_fmt_nightly_2021_09_08].
+      rustup toolchain install nightly-2021-09-08 --profile minimal --component rustfmt
 
   install_tools:
     description: Install the tools needed to build and validate the program.