[INFO] fetching crate trace-err 0.1.4...
[INFO] checking trace-err-0.1.4 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate trace-err 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate trace-err 0.1.4
[INFO] finished tweaking crates.io crate trace-err 0.1.4
[INFO] tweaked toml for crates.io crate trace-err 0.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate trace-err 0.1.4 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate trace-err 0.1.4 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f3577f3e71ec4a8e5b519f92055d899016aa3d7180fe372ae821baf664b2c0b
[INFO] running `Command { std: "docker" "start" "-a" "4f3577f3e71ec4a8e5b519f92055d899016aa3d7180fe372ae821baf664b2c0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f3577f3e71ec4a8e5b519f92055d899016aa3d7180fe372ae821baf664b2c0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f3577f3e71ec4a8e5b519f92055d899016aa3d7180fe372ae821baf664b2c0b", kill_on_drop: false }`
[INFO] [stdout] 4f3577f3e71ec4a8e5b519f92055d899016aa3d7180fe372ae821baf664b2c0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d61db748c404618acb8276a147ac3b9c185e248089eb8e32c16c8743b96d218e
[INFO] running `Command { std: "docker" "start" "-a" "d61db748c404618acb8276a147ac3b9c185e248089eb8e32c16c8743b96d218e", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling tracing-attributes v0.1.29
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking trace-err v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.35s
[INFO] running `Command { std: "docker" "inspect" "d61db748c404618acb8276a147ac3b9c185e248089eb8e32c16c8743b96d218e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d61db748c404618acb8276a147ac3b9c185e248089eb8e32c16c8743b96d218e", kill_on_drop: false }`
[INFO] [stdout] d61db748c404618acb8276a147ac3b9c185e248089eb8e32c16c8743b96d218e