[INFO] cloning repository https://github.com/IgorPietrzak/P-colourings-of-Knots
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IgorPietrzak/P-colourings-of-Knots" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorPietrzak%2FP-colourings-of-Knots", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorPietrzak%2FP-colourings-of-Knots'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e3dd5c34a3929fed838c9577fcb8b445799020a
[INFO] building IgorPietrzak/P-colourings-of-Knots against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorPietrzak%2FP-colourings-of-Knots" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IgorPietrzak/P-colourings-of-Knots on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/IgorPietrzak/P-colourings-of-Knots
[INFO] finished tweaking git repo https://github.com/IgorPietrzak/P-colourings-of-Knots
[INFO] tweaked toml for git repo https://github.com/IgorPietrzak/P-colourings-of-Knots written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/IgorPietrzak/P-colourings-of-Knots 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75a079cf820cccd725c1ea7df1367954796cf00731081c544fcb27bf43b3b0be
[INFO] running `Command { std: "docker" "start" "-a" "75a079cf820cccd725c1ea7df1367954796cf00731081c544fcb27bf43b3b0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75a079cf820cccd725c1ea7df1367954796cf00731081c544fcb27bf43b3b0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75a079cf820cccd725c1ea7df1367954796cf00731081c544fcb27bf43b3b0be", kill_on_drop: false }`
[INFO] [stdout] 75a079cf820cccd725c1ea7df1367954796cf00731081c544fcb27bf43b3b0be
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a6a161047b250a32608d36a7d3f2f8e221bbb7203e2d4b9c492ae438663fa8c
[INFO] running `Command { std: "docker" "start" "-a" "1a6a161047b250a32608d36a7d3f2f8e221bbb7203e2d4b9c492ae438663fa8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling knots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "1a6a161047b250a32608d36a7d3f2f8e221bbb7203e2d4b9c492ae438663fa8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a6a161047b250a32608d36a7d3f2f8e221bbb7203e2d4b9c492ae438663fa8c", kill_on_drop: false }`
[INFO] [stdout] 1a6a161047b250a32608d36a7d3f2f8e221bbb7203e2d4b9c492ae438663fa8c
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29602c1cf0411181f1d47dca3803d2eb4633782a2433a62312f7ee27dc9dc94f
[INFO] running `Command { std: "docker" "start" "-a" "29602c1cf0411181f1d47dca3803d2eb4633782a2433a62312f7ee27dc9dc94f", kill_on_drop: false }`
[INFO] [stderr]    Compiling knots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "29602c1cf0411181f1d47dca3803d2eb4633782a2433a62312f7ee27dc9dc94f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29602c1cf0411181f1d47dca3803d2eb4633782a2433a62312f7ee27dc9dc94f", kill_on_drop: false }`
[INFO] [stdout] 29602c1cf0411181f1d47dca3803d2eb4633782a2433a62312f7ee27dc9dc94f