[INFO] fetching crate luthien 0.6.0...
[INFO] checking luthien-0.6.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate luthien 0.6.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate luthien 0.6.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate luthien 0.6.0
[INFO] finished tweaking crates.io crate luthien 0.6.0
[INFO] tweaked toml for crates.io crate luthien 0.6.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate luthien 0.6.0 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded palette v0.5.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6aa1abbc38ad33eb7c53d24aa19cd3a2c5bbc42c74cbd083e448d2b1e6c5580
[INFO] running `Command { std: "docker" "start" "-a" "a6aa1abbc38ad33eb7c53d24aa19cd3a2c5bbc42c74cbd083e448d2b1e6c5580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6aa1abbc38ad33eb7c53d24aa19cd3a2c5bbc42c74cbd083e448d2b1e6c5580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6aa1abbc38ad33eb7c53d24aa19cd3a2c5bbc42c74cbd083e448d2b1e6c5580", kill_on_drop: false }`
[INFO] [stdout] a6aa1abbc38ad33eb7c53d24aa19cd3a2c5bbc42c74cbd083e448d2b1e6c5580
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7765e92bb5b3815be9032494f5dacfda6d02b27224950b2b1b2441adfc5c8ef7
[INFO] running `Command { std: "docker" "start" "-a" "7765e92bb5b3815be9032494f5dacfda6d02b27224950b2b1b2441adfc5c8ef7", kill_on_drop: false }`
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[INFO] [stderr]     Checking luthien v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/theme.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |         format!("{}", test_theme!().colors.palette);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/theme.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         format!("{}", test_theme!());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.41s
[INFO] running `Command { std: "docker" "inspect" "7765e92bb5b3815be9032494f5dacfda6d02b27224950b2b1b2441adfc5c8ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7765e92bb5b3815be9032494f5dacfda6d02b27224950b2b1b2441adfc5c8ef7", kill_on_drop: false }`
[INFO] [stdout] 7765e92bb5b3815be9032494f5dacfda6d02b27224950b2b1b2441adfc5c8ef7