[INFO] fetching crate best 0.13.0...
[INFO] testing best-0.13.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate best 0.13.0 into /workspace/builds/worker-63/source
[INFO] validating manifest of crates.io crate best 0.13.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate best 0.13.0
[INFO] finished tweaking crates.io crate best 0.13.0
[INFO] tweaked toml for crates.io crate best 0.13.0 written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae5d7a1c7f8a6d1759ec385d0246266968de13903d3063dd3ebbece4a5c65586
[INFO] running `Command { std: "docker" "start" "-a" "ae5d7a1c7f8a6d1759ec385d0246266968de13903d3063dd3ebbece4a5c65586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae5d7a1c7f8a6d1759ec385d0246266968de13903d3063dd3ebbece4a5c65586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae5d7a1c7f8a6d1759ec385d0246266968de13903d3063dd3ebbece4a5c65586", kill_on_drop: false }`
[INFO] [stdout] ae5d7a1c7f8a6d1759ec385d0246266968de13903d3063dd3ebbece4a5c65586
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa9d43255e0b07d14c22817bc9d6527e7c1a7dd23179279c7a9127c85d1bf369
[INFO] running `Command { std: "docker" "start" "-a" "fa9d43255e0b07d14c22817bc9d6527e7c1a7dd23179279c7a9127c85d1bf369", kill_on_drop: false }`
[INFO] [stderr]    Compiling best v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "fa9d43255e0b07d14c22817bc9d6527e7c1a7dd23179279c7a9127c85d1bf369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa9d43255e0b07d14c22817bc9d6527e7c1a7dd23179279c7a9127c85d1bf369", kill_on_drop: false }`
[INFO] [stdout] fa9d43255e0b07d14c22817bc9d6527e7c1a7dd23179279c7a9127c85d1bf369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1f9c41cdd81fe7f7c41da450942df113c9f1c80a66cc6ba4249c8ea82739381
[INFO] running `Command { std: "docker" "start" "-a" "b1f9c41cdd81fe7f7c41da450942df113c9f1c80a66cc6ba4249c8ea82739381", kill_on_drop: false }`
[INFO] [stderr]    Compiling best v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "b1f9c41cdd81fe7f7c41da450942df113c9f1c80a66cc6ba4249c8ea82739381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f9c41cdd81fe7f7c41da450942df113c9f1c80a66cc6ba4249c8ea82739381", kill_on_drop: false }`
[INFO] [stdout] b1f9c41cdd81fe7f7c41da450942df113c9f1c80a66cc6ba4249c8ea82739381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 267dacc0f179ed0261caaf3c1bc5dc5fdbf46c858abdeea98aae5e1a6918beb4
[INFO] running `Command { std: "docker" "start" "-a" "267dacc0f179ed0261caaf3c1bc5dc5fdbf46c858abdeea98aae5e1a6918beb4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/best-7fd190046fb27013)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests best
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "267dacc0f179ed0261caaf3c1bc5dc5fdbf46c858abdeea98aae5e1a6918beb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267dacc0f179ed0261caaf3c1bc5dc5fdbf46c858abdeea98aae5e1a6918beb4", kill_on_drop: false }`
[INFO] [stdout] 267dacc0f179ed0261caaf3c1bc5dc5fdbf46c858abdeea98aae5e1a6918beb4