[INFO] fetching crate enumber 0.3.0...
[INFO] checking enumber-0.3.0 against try#a9edbbf2bb5de1c1473310f96a4fea736f068a54 for pr-114776-1
[INFO] extracting crate enumber 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate enumber 0.3.0 on toolchain a9edbbf2bb5de1c1473310f96a4fea736f068a54
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9edbbf2bb5de1c1473310f96a4fea736f068a54" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enumber 0.3.0
[INFO] finished tweaking crates.io crate enumber 0.3.0
[INFO] tweaked toml for crates.io crate enumber 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9edbbf2bb5de1c1473310f96a4fea736f068a54" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] warning: spurious network error (3 tries remaining): [56] Failure when receiving data from the peer (Recv failure: Connection reset by peer)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9edbbf2bb5de1c1473310f96a4fea736f068a54" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+a9edbbf2bb5de1c1473310f96a4fea736f068a54" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c88c8c2ba17a1e438c23eae0b42ba72c743bd30636f3672fb928655119f16d4d
[INFO] running `Command { std: "docker" "start" "-a" "c88c8c2ba17a1e438c23eae0b42ba72c743bd30636f3672fb928655119f16d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c88c8c2ba17a1e438c23eae0b42ba72c743bd30636f3672fb928655119f16d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c88c8c2ba17a1e438c23eae0b42ba72c743bd30636f3672fb928655119f16d4d", kill_on_drop: false }`
[INFO] [stdout] c88c8c2ba17a1e438c23eae0b42ba72c743bd30636f3672fb928655119f16d4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+a9edbbf2bb5de1c1473310f96a4fea736f068a54" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc1dad5413f970d4d57461f685af8387aeb349b0cae3b3ae3fb8ca4326688bbf
[INFO] running `Command { std: "docker" "start" "-a" "dc1dad5413f970d4d57461f685af8387aeb349b0cae3b3ae3fb8ca4326688bbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking quote v1.0.33
[INFO] [stderr]     Checking enumber v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> tests/simple.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Fingerprint {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 45 |     value: Box<[u8]>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Fingerprint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.52s
[INFO] running `Command { std: "docker" "inspect" "dc1dad5413f970d4d57461f685af8387aeb349b0cae3b3ae3fb8ca4326688bbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc1dad5413f970d4d57461f685af8387aeb349b0cae3b3ae3fb8ca4326688bbf", kill_on_drop: false }`
[INFO] [stdout] dc1dad5413f970d4d57461f685af8387aeb349b0cae3b3ae3fb8ca4326688bbf