[INFO] fetching crate mcmf 2.0.0...
[INFO] testing mcmf-2.0.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate mcmf 2.0.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate mcmf 2.0.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcmf 2.0.0
[INFO] finished tweaking crates.io crate mcmf 2.0.0
[INFO] tweaked toml for crates.io crate mcmf 2.0.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e4f17cf30881196cbb0a7a954c65ee3734c42106122c59f3d7d743d9d76680c
[INFO] running `Command { std: "docker" "start" "-a" "6e4f17cf30881196cbb0a7a954c65ee3734c42106122c59f3d7d743d9d76680c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e4f17cf30881196cbb0a7a954c65ee3734c42106122c59f3d7d743d9d76680c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e4f17cf30881196cbb0a7a954c65ee3734c42106122c59f3d7d743d9d76680c", kill_on_drop: false }`
[INFO] [stdout] 6e4f17cf30881196cbb0a7a954c65ee3734c42106122c59f3d7d743d9d76680c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5256a9513492b738109bae17490a49ccfb4b774f8be2d60fc1e8221af68b598
[INFO] running `Command { std: "docker" "start" "-a" "b5256a9513492b738109bae17490a49ccfb4b774f8be2d60fc1e8221af68b598", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling mcmf v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `gcc::Build`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]  --> build.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `gcc::Build::new`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]  --> build.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout]   |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.93s
[INFO] running `Command { std: "docker" "inspect" "b5256a9513492b738109bae17490a49ccfb4b774f8be2d60fc1e8221af68b598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5256a9513492b738109bae17490a49ccfb4b774f8be2d60fc1e8221af68b598", kill_on_drop: false }`
[INFO] [stdout] b5256a9513492b738109bae17490a49ccfb4b774f8be2d60fc1e8221af68b598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d169884bcab5d64b4424e41c8eb4d41821133fa613f05de25a94f02fa5828889
[INFO] running `Command { std: "docker" "start" "-a" "d169884bcab5d64b4424e41c8eb4d41821133fa613f05de25a94f02fa5828889", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mcmf v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `gcc::Build`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]  --> build.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `gcc::Build::new`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]  --> build.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout]   |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.07s
[INFO] running `Command { std: "docker" "inspect" "d169884bcab5d64b4424e41c8eb4d41821133fa613f05de25a94f02fa5828889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d169884bcab5d64b4424e41c8eb4d41821133fa613f05de25a94f02fa5828889", kill_on_drop: false }`
[INFO] [stdout] d169884bcab5d64b4424e41c8eb4d41821133fa613f05de25a94f02fa5828889
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 818de4e016f6fdfb8a6b8f8aa0badc4c9943d4a5d6d92fc88d2a980e61ac6cfb
[INFO] running `Command { std: "docker" "start" "-a" "818de4e016f6fdfb8a6b8f8aa0badc4c9943d4a5d6d92fc88d2a980e61ac6cfb", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated struct `gcc::Build`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout] running 5 tests
[INFO] [stderr]  --> build.rs:4:22
[INFO] [stdout] test tests::empty_graph ... ok
[INFO] [stderr]   |
[INFO] [stdout] test tests::large_capacities ... ok
[INFO] [stderr] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout] test tests::mcmf ... ok
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stdout] test tests::large_number ... ok
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `gcc::Build::new`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]  --> build.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut config = gcc::Build::new();
[INFO] [stderr]   |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mcmf-bf48f84102f0fb19)
[INFO] [stdout] test tests::negative_capacity_panics - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mcmf
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - GraphBuilder (line 217) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.99s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "818de4e016f6fdfb8a6b8f8aa0badc4c9943d4a5d6d92fc88d2a980e61ac6cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "818de4e016f6fdfb8a6b8f8aa0badc4c9943d4a5d6d92fc88d2a980e61ac6cfb", kill_on_drop: false }`
[INFO] [stdout] 818de4e016f6fdfb8a6b8f8aa0badc4c9943d4a5d6d92fc88d2a980e61ac6cfb