[INFO] fetching crate iro 0.0.1...
[INFO] checking iro-0.0.1 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate iro 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate iro 0.0.1 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iro 0.0.1
[INFO] finished tweaking crates.io crate iro 0.0.1
[INFO] tweaked toml for crates.io crate iro 0.0.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate iro 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d19a98a674b630fadb0abf618175cab6974c4cfa7cdbc6c68936f225f66ce509
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d19a98a674b630fadb0abf618175cab6974c4cfa7cdbc6c68936f225f66ce509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d19a98a674b630fadb0abf618175cab6974c4cfa7cdbc6c68936f225f66ce509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d19a98a674b630fadb0abf618175cab6974c4cfa7cdbc6c68936f225f66ce509", kill_on_drop: false }`
[INFO] [stdout] d19a98a674b630fadb0abf618175cab6974c4cfa7cdbc6c68936f225f66ce509
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fc1107319e6405d93fa853e3e58676e2c5952fd6595f6316c74569229adf7d3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3fc1107319e6405d93fa853e3e58676e2c5952fd6595f6316c74569229adf7d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.43
[INFO] [stderr]     Checking partial-min-max v0.4.0
[INFO] [stderr]    Compiling test-case v1.0.0
[INFO] [stderr]     Checking min-max v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking iro v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `min_max::*`
[INFO] [stdout]  --> src/rgb.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use min_max::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cmyk.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn new(c: f32, m: f32, y: f32, k: f32) -> Self {
[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: `new`
[INFO] [stdout]   --> src/cmyk.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn new(c: u8, m: u8, y: u8, k: u8) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RGB_SCALE`
[INFO] [stdout]  --> src/rgb.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) const RGB_SCALE: u8 = 255;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stdout] warning: unused import: `min_max::*`
[INFO] [stdout]  --> src/rgb.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use min_max::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cmyk.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn new(c: f32, m: f32, y: f32, k: f32) -> Self {
[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: `new`
[INFO] [stdout]   --> src/cmyk.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn new(c: u8, m: u8, y: u8, k: u8) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RGB_SCALE`
[INFO] [stdout]  --> src/rgb.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) const RGB_SCALE: u8 = 255;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.37s
[INFO] running `Command { std: "docker" "inspect" "3fc1107319e6405d93fa853e3e58676e2c5952fd6595f6316c74569229adf7d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fc1107319e6405d93fa853e3e58676e2c5952fd6595f6316c74569229adf7d3", kill_on_drop: false }`
[INFO] [stdout] 3fc1107319e6405d93fa853e3e58676e2c5952fd6595f6316c74569229adf7d3