[INFO] fetching crate singleton-trait 0.4.0...
[INFO] checking singleton-trait-0.4.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate singleton-trait 0.4.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate singleton-trait 0.4.0
[INFO] finished tweaking crates.io crate singleton-trait 0.4.0
[INFO] tweaked toml for crates.io crate singleton-trait 0.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate singleton-trait 0.4.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate singleton-trait 0.4.0 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2edbe96ed61472ae1484a6b0da98cc928c82546c9a642ace7ab3b9c1e48a630a
[INFO] running `Command { std: "docker" "start" "-a" "2edbe96ed61472ae1484a6b0da98cc928c82546c9a642ace7ab3b9c1e48a630a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2edbe96ed61472ae1484a6b0da98cc928c82546c9a642ace7ab3b9c1e48a630a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2edbe96ed61472ae1484a6b0da98cc928c82546c9a642ace7ab3b9c1e48a630a", kill_on_drop: false }`
[INFO] [stdout] 2edbe96ed61472ae1484a6b0da98cc928c82546c9a642ace7ab3b9c1e48a630a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf8cf4286889fddbccd72c2b227604509548b72f7ac5409376ae886017f7e89a
[INFO] running `Command { std: "docker" "start" "-a" "bf8cf4286889fddbccd72c2b227604509548b72f7ac5409376ae886017f7e89a", kill_on_drop: false }`
[INFO] [stderr]     Checking singleton-trait v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/lib.rs:448:61
[INFO] [stdout]     |
[INFO] [stdout] 448 |         struct Guard<'a>(PhantomData<fn(&'a ()) -> &'a ()>, &'a NonCopy);
[INFO] [stdout]     |                ----- field in this struct                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "bf8cf4286889fddbccd72c2b227604509548b72f7ac5409376ae886017f7e89a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf8cf4286889fddbccd72c2b227604509548b72f7ac5409376ae886017f7e89a", kill_on_drop: false }`
[INFO] [stdout] bf8cf4286889fddbccd72c2b227604509548b72f7ac5409376ae886017f7e89a