[INFO] fetching crate serial_enumerator 0.2.12...
[INFO] building serial_enumerator-0.2.12 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate serial_enumerator 0.2.12 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate serial_enumerator 0.2.12
[INFO] finished tweaking crates.io crate serial_enumerator 0.2.12
[INFO] tweaked toml for crates.io crate serial_enumerator 0.2.12 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serial_enumerator 0.2.12 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serial_enumerator 0.2.12 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4d6815e1372b6a2cd5d2c31827a59ff1d8c0b0f9f8f72b1cc0427c5efa6f1f7
[INFO] running `Command { std: "docker" "start" "-a" "a4d6815e1372b6a2cd5d2c31827a59ff1d8c0b0f9f8f72b1cc0427c5efa6f1f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d6815e1372b6a2cd5d2c31827a59ff1d8c0b0f9f8f72b1cc0427c5efa6f1f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d6815e1372b6a2cd5d2c31827a59ff1d8c0b0f9f8f72b1cc0427c5efa6f1f7", kill_on_drop: false }`
[INFO] [stdout] a4d6815e1372b6a2cd5d2c31827a59ff1d8c0b0f9f8f72b1cc0427c5efa6f1f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0f8cccb1f5267af77d456a36d87bc26f25b518a4934f9b848bc803806d6c083
[INFO] running `Command { std: "docker" "start" "-a" "c0f8cccb1f5267af77d456a36d87bc26f25b518a4934f9b848bc803806d6c083", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling serial_enumerator v0.2.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.77s
[INFO] running `Command { std: "docker" "inspect" "c0f8cccb1f5267af77d456a36d87bc26f25b518a4934f9b848bc803806d6c083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0f8cccb1f5267af77d456a36d87bc26f25b518a4934f9b848bc803806d6c083", kill_on_drop: false }`
[INFO] [stdout] c0f8cccb1f5267af77d456a36d87bc26f25b518a4934f9b848bc803806d6c083
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0562942dd2d19e693782f1f88306cc7644a27aa4ab97342241cecffe9101f13f
[INFO] running `Command { std: "docker" "start" "-a" "0562942dd2d19e693782f1f88306cc7644a27aa4ab97342241cecffe9101f13f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial_enumerator v0.2.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "0562942dd2d19e693782f1f88306cc7644a27aa4ab97342241cecffe9101f13f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0562942dd2d19e693782f1f88306cc7644a27aa4ab97342241cecffe9101f13f", kill_on_drop: false }`
[INFO] [stdout] 0562942dd2d19e693782f1f88306cc7644a27aa4ab97342241cecffe9101f13f