[INFO] fetching crate rust_bundler_cp 0.3.16... [INFO] checking rust_bundler_cp-0.3.16 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1 [INFO] extracting crate rust_bundler_cp 0.3.16 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate rust_bundler_cp 0.3.16 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rust_bundler_cp 0.3.16 [INFO] finished tweaking crates.io crate rust_bundler_cp 0.3.16 [INFO] tweaked toml for crates.io crate rust_bundler_cp 0.3.16 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate crates.io crate rust_bundler_cp 0.3.16 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded simple-string-builder v0.2.0 [INFO] [stderr] Downloaded rustfmt-config_proc_macro v0.2.0 [INFO] [stderr] Downloaded rustc-ap-rustc_index v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_macros v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_serialize v677.0.0 [INFO] [stderr] Downloaded quote v1.0.19 [INFO] [stderr] Downloaded rustc-ap-rustc_fs_util v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_arena v677.0.0 [INFO] [stderr] Downloaded measureme v0.7.1 [INFO] [stderr] Downloaded annotate-snippets v0.6.1 [INFO] [stderr] Downloaded assert_cli v0.6.3 [INFO] [stderr] Downloaded camino v1.0.9 [INFO] [stderr] Downloaded backtrace v0.3.65 [INFO] [stderr] Downloaded rustc-ap-rustc_ast v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_parse v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_target v677.0.0 [INFO] [stderr] Downloaded rustc-rayon v0.3.2 [INFO] [stderr] Downloaded rustc-rayon-core v0.3.2 [INFO] [stderr] Downloaded object v0.28.4 [INFO] [stderr] Downloaded rustc-ap-rustc_expand v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_session v677.0.0 [INFO] [stderr] Downloaded anyhow v1.0.58 [INFO] [stderr] Downloaded rustc-ap-rustc_attr v677.0.0 [INFO] [stderr] Downloaded rustfmt-nightly v1.4.21 [INFO] [stderr] Downloaded rustc-ap-rustc_ast_pretty v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_data_structures v677.0.0 [INFO] [stderr] Downloaded annotate-snippets v0.8.0 [INFO] [stderr] Downloaded rustc-ap-rustc_errors v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_feature v677.0.0 [INFO] [stderr] Downloaded crossbeam-utils v0.8.9 [INFO] [stderr] Downloaded stacker v0.1.14 [INFO] [stderr] Downloaded semver v1.0.10 [INFO] [stderr] Downloaded diff v0.1.12 [INFO] [stderr] Downloaded rustc-ap-rustc_ast_passes v677.0.0 [INFO] [stderr] Downloaded termize v0.1.1 [INFO] [stderr] Downloaded md-5 v0.8.0 [INFO] [stderr] Downloaded ena v0.14.0 [INFO] [stderr] Downloaded psm v0.1.18 [INFO] [stderr] Downloaded cargo_metadata v0.8.2 [INFO] [stderr] Downloaded rustc-ap-rustc_lexer v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_graphviz v677.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_span v677.0.0 [INFO] [stderr] Downloaded goldenfile v1.3.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9ff32c94ddfd3b1f49d128324470b684f8eb13c944fdd71df02fb03e9ef9b3bb [INFO] running `Command { std: "docker" "start" "-a" "9ff32c94ddfd3b1f49d128324470b684f8eb13c944fdd71df02fb03e9ef9b3bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9ff32c94ddfd3b1f49d128324470b684f8eb13c944fdd71df02fb03e9ef9b3bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ff32c94ddfd3b1f49d128324470b684f8eb13c944fdd71df02fb03e9ef9b3bb", kill_on_drop: false }` [INFO] [stdout] 9ff32c94ddfd3b1f49d128324470b684f8eb13c944fdd71df02fb03e9ef9b3bb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5fc23f86f6b12a12e7f3acf3bce0ef7934b0f33d961e6061542b05bf87c1675b [INFO] running `Command { std: "docker" "start" "-a" "5fc23f86f6b12a12e7f3acf3bce0ef7934b0f33d961e6061542b05bf87c1675b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling unicode-ident v1.0.1 [INFO] [stderr] Compiling syn v1.0.98 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling serde_derive v1.0.137 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling serde v1.0.137 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling cc v1.0.73 [INFO] [stderr] Compiling camino v1.0.9 [INFO] [stderr] Checking ryu v1.0.10 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Checking itoa v1.0.2 [INFO] [stderr] Compiling semver v1.0.10 [INFO] [stderr] Checking gimli v0.26.1 [INFO] [stderr] Checking regex-syntax v0.6.26 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Compiling unicode-xid v0.2.3 [INFO] [stderr] Checking miniz_oxide v0.5.3 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking simple-string-builder v0.2.0 [INFO] [stderr] Compiling quote v1.0.19 [INFO] [stderr] Checking fastrand v1.7.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking environment v0.1.1 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking object v0.28.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking tempfile v3.3.0 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking colored v1.9.3 [INFO] [stderr] Checking goldenfile v1.3.0 [INFO] [stderr] Compiling backtrace v0.3.65 [INFO] [stderr] Checking regex v1.5.6 [INFO] [stderr] Checking addr2line v0.17.0 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking cargo-platform v0.1.2 [INFO] [stderr] Checking cargo_metadata v0.14.2 [INFO] [stderr] Checking assert_cli v0.6.3 [INFO] [stderr] Checking rust_bundler_cp v0.3.16 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `expander` [INFO] [stdout] --> src/lib.rs:415:17 [INFO] [stdout] | [INFO] [stdout] 415 | let mut expander = create_expander(); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expander` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut expander = create_expander(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `file` [INFO] [stdout] --> src/lib.rs:419:17 [INFO] [stdout] | [INFO] [stdout] 419 | let mut file = read_source_code(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:419:13 [INFO] [stdout] | [INFO] [stdout] 419 | let mut file = read_source_code(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:428:13 [INFO] [stdout] | [INFO] [stdout] 428 | let mut expander = crate::Expander::new(base_path, "", crate_name); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:437:13 [INFO] [stdout] | [INFO] [stdout] 437 | let mut file = syn::parse_file(&syntax_tree).expect("failed to parse binary target source"); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.32s [INFO] running `Command { std: "docker" "inspect" "5fc23f86f6b12a12e7f3acf3bce0ef7934b0f33d961e6061542b05bf87c1675b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5fc23f86f6b12a12e7f3acf3bce0ef7934b0f33d961e6061542b05bf87c1675b", kill_on_drop: false }` [INFO] [stdout] 5fc23f86f6b12a12e7f3acf3bce0ef7934b0f33d961e6061542b05bf87c1675b [INFO] checking rust_bundler_cp-0.3.16 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1 [INFO] extracting crate rust_bundler_cp 0.3.16 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate rust_bundler_cp 0.3.16 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rust_bundler_cp 0.3.16 [INFO] finished tweaking crates.io crate rust_bundler_cp 0.3.16 [INFO] tweaked toml for crates.io crate rust_bundler_cp 0.3.16 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate crates.io crate rust_bundler_cp 0.3.16 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] aa388ebbc48421fcc4ee1af7899be9b053f675119a61fe856ce46d5e026c918e [INFO] running `Command { std: "docker" "start" "-a" "aa388ebbc48421fcc4ee1af7899be9b053f675119a61fe856ce46d5e026c918e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aa388ebbc48421fcc4ee1af7899be9b053f675119a61fe856ce46d5e026c918e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa388ebbc48421fcc4ee1af7899be9b053f675119a61fe856ce46d5e026c918e", kill_on_drop: false }` [INFO] [stdout] aa388ebbc48421fcc4ee1af7899be9b053f675119a61fe856ce46d5e026c918e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 604f77b56f809b1bd28642739517c27a14acc3e339f7300e1b5543d667f368a7 [INFO] running `Command { std: "docker" "start" "-a" "604f77b56f809b1bd28642739517c27a14acc3e339f7300e1b5543d667f368a7", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling unicode-ident v1.0.1 [INFO] [stderr] Compiling syn v1.0.98 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling serde_derive v1.0.137 [INFO] [stderr] Compiling serde v1.0.137 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling camino v1.0.9 [INFO] [stderr] Compiling semver v1.0.10 [INFO] [stderr] Checking ryu v1.0.10 [INFO] [stderr] Checking itoa v1.0.2 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling cc v1.0.73 [INFO] [stderr] Checking gimli v0.26.1 [INFO] [stderr] Compiling unicode-xid v0.2.3 [INFO] [stderr] Checking regex-syntax v0.6.26 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking termcolor v1.1.3 [INFO] [stderr] Checking miniz_oxide v0.5.3 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking simple-string-builder v0.2.0 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking object v0.28.4 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking fastrand v1.7.0 [INFO] [stderr] Checking environment v0.1.1 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking tempfile v3.3.0 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Compiling quote v1.0.19 [INFO] [stderr] Checking colored v1.9.3 [INFO] [stderr] Checking goldenfile v1.3.0 [INFO] [stderr] Compiling backtrace v0.3.65 [INFO] [stderr] Checking regex v1.5.6 [INFO] [stderr] Checking addr2line v0.17.0 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking cargo-platform v0.1.2 [INFO] [stderr] Checking cargo_metadata v0.14.2 [INFO] [stderr] Checking assert_cli v0.6.3 [INFO] [stderr] Checking rust_bundler_cp v0.3.16 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `expander` [INFO] [stdout] --> src/lib.rs:415:17 [INFO] [stdout] | [INFO] [stdout] 415 | let mut expander = create_expander(); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expander` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:415:13 [INFO] [stdout] | [INFO] [stdout] 415 | let mut expander = create_expander(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `file` [INFO] [stdout] --> src/lib.rs:419:17 [INFO] [stdout] | [INFO] [stdout] 419 | let mut file = read_source_code(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:419:13 [INFO] [stdout] | [INFO] [stdout] 419 | let mut file = read_source_code(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:428:13 [INFO] [stdout] | [INFO] [stdout] 428 | let mut expander = crate::Expander::new(base_path, "", crate_name); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:437:13 [INFO] [stdout] | [INFO] [stdout] 437 | let mut file = syn::parse_file(&syntax_tree).expect("failed to parse binary target source"); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.56s [INFO] running `Command { std: "docker" "inspect" "604f77b56f809b1bd28642739517c27a14acc3e339f7300e1b5543d667f368a7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "604f77b56f809b1bd28642739517c27a14acc3e339f7300e1b5543d667f368a7", kill_on_drop: false }` [INFO] [stdout] 604f77b56f809b1bd28642739517c27a14acc3e339f7300e1b5543d667f368a7