[INFO] fetching crate learning-trait 0.1.0...
[INFO] checking learning-trait-0.1.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate learning-trait 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate learning-trait 0.1.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate learning-trait 0.1.0
[INFO] finished tweaking crates.io crate learning-trait 0.1.0
[INFO] tweaked toml for crates.io crate learning-trait 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba145082f865e1053ebeee082c0f0f12fbc50ab89bce42e1b742d814c3ac45e3
[INFO] running `Command { std: "docker" "start" "-a" "ba145082f865e1053ebeee082c0f0f12fbc50ab89bce42e1b742d814c3ac45e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba145082f865e1053ebeee082c0f0f12fbc50ab89bce42e1b742d814c3ac45e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba145082f865e1053ebeee082c0f0f12fbc50ab89bce42e1b742d814c3ac45e3", kill_on_drop: false }`
[INFO] [stdout] ba145082f865e1053ebeee082c0f0f12fbc50ab89bce42e1b742d814c3ac45e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b58f9b90cd9f9fa848b050594a0d61933be187861f3dc5837c0c9f44bcf97a9
[INFO] running `Command { std: "docker" "start" "-a" "0b58f9b90cd9f9fa848b050594a0d61933be187861f3dc5837c0c9f44bcf97a9", kill_on_drop: false }`
[INFO] [stderr]     Checking learning-trait v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "0b58f9b90cd9f9fa848b050594a0d61933be187861f3dc5837c0c9f44bcf97a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b58f9b90cd9f9fa848b050594a0d61933be187861f3dc5837c0c9f44bcf97a9", kill_on_drop: false }`
[INFO] [stdout] 0b58f9b90cd9f9fa848b050594a0d61933be187861f3dc5837c0c9f44bcf97a9