[INFO] fetching crate mutils 5.3.0...
[INFO] checking mutils-5.3.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate mutils 5.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate mutils 5.3.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mutils 5.3.0
[INFO] finished tweaking crates.io crate mutils 5.3.0
[INFO] tweaked toml for crates.io crate mutils 5.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b56ae503250340361ea22b8ea52bb79988e8d9d4a8b9a92cd44ecc205d4972d2
[INFO] running `Command { std: "docker" "start" "-a" "b56ae503250340361ea22b8ea52bb79988e8d9d4a8b9a92cd44ecc205d4972d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b56ae503250340361ea22b8ea52bb79988e8d9d4a8b9a92cd44ecc205d4972d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b56ae503250340361ea22b8ea52bb79988e8d9d4a8b9a92cd44ecc205d4972d2", kill_on_drop: false }`
[INFO] [stdout] b56ae503250340361ea22b8ea52bb79988e8d9d4a8b9a92cd44ecc205d4972d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ae2e696848d60c92809c0e6e870288f70b81ae2ba6e1eb2c60b421e24153a56
[INFO] running `Command { std: "docker" "start" "-a" "0ae2e696848d60c92809c0e6e870288f70b81ae2ba6e1eb2c60b421e24153a56", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking mutils v5.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `f32_to_hex_u32`
[INFO] [stdout]   --> src/colour.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn f32_to_hex_u32(val: f32, shift: u8) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clamp_u8_to_f32`
[INFO] [stdout]   --> src/colour.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn clamp_u8_to_f32(val: u8) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f32_to_rgba_u8`
[INFO] [stdout]   --> src/colour.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn f32_to_rgba_u8(val: f32) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f32_to_hex_u32`
[INFO] [stdout]   --> src/colour.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn f32_to_hex_u32(val: f32, shift: u8) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clamp_u8_to_f32`
[INFO] [stdout]   --> src/colour.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn clamp_u8_to_f32(val: u8) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f32_to_rgba_u8`
[INFO] [stdout]   --> src/colour.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn f32_to_rgba_u8(val: f32) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "0ae2e696848d60c92809c0e6e870288f70b81ae2ba6e1eb2c60b421e24153a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ae2e696848d60c92809c0e6e870288f70b81ae2ba6e1eb2c60b421e24153a56", kill_on_drop: false }`
[INFO] [stdout] 0ae2e696848d60c92809c0e6e870288f70b81ae2ba6e1eb2c60b421e24153a56