[INFO] fetching crate bc 0.1.13...
[INFO] checking bc-0.1.13 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate bc 0.1.13 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate bc 0.1.13 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bc 0.1.13
[INFO] finished tweaking crates.io crate bc 0.1.13
[INFO] tweaked toml for crates.io crate bc 0.1.13 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded execute-command-macro-impl v0.1.10
[INFO] [stderr]   Downloaded execute-command-tokens v0.1.7
[INFO] [stderr]   Downloaded generic-array v1.0.0
[INFO] [stderr]   Downloaded execute-command-macro v0.1.9
[INFO] [stderr]   Downloaded execute v0.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a0f8bbd3cd0cd624068a6469f89e57ea2e6cd7df8bb95e7a9bf56c4c4654ed9
[INFO] running `Command { std: "docker" "start" "-a" "3a0f8bbd3cd0cd624068a6469f89e57ea2e6cd7df8bb95e7a9bf56c4c4654ed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a0f8bbd3cd0cd624068a6469f89e57ea2e6cd7df8bb95e7a9bf56c4c4654ed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a0f8bbd3cd0cd624068a6469f89e57ea2e6cd7df8bb95e7a9bf56c4c4654ed9", kill_on_drop: false }`
[INFO] [stdout] 3a0f8bbd3cd0cd624068a6469f89e57ea2e6cd7df8bb95e7a9bf56c4c4654ed9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5231e24de4bf547c82dc9bfe43f0f65566ff2bf1221b238a1caadd81e541613e
[INFO] running `Command { std: "docker" "start" "-a" "5231e24de4bf547c82dc9bfe43f0f65566ff2bf1221b238a1caadd81e541613e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling execute-command-tokens v0.1.7
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking generic-array v1.0.0
[INFO] [stderr]    Compiling execute-command-macro-impl v0.1.10
[INFO] [stderr]     Checking execute-command-macro v0.1.9
[INFO] [stderr]     Checking execute v0.2.13
[INFO] [stderr]     Checking bc v0.1.13 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "5231e24de4bf547c82dc9bfe43f0f65566ff2bf1221b238a1caadd81e541613e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5231e24de4bf547c82dc9bfe43f0f65566ff2bf1221b238a1caadd81e541613e", kill_on_drop: false }`
[INFO] [stdout] 5231e24de4bf547c82dc9bfe43f0f65566ff2bf1221b238a1caadd81e541613e