[INFO] fetching crate mdo 0.3.0...
[INFO] testing mdo-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mdo 0.3.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate mdo 0.3.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdo 0.3.0
[INFO] finished tweaking crates.io crate mdo 0.3.0
[INFO] tweaked toml for crates.io crate mdo 0.3.0 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 384c5e2131e65758f6c431da2296893cb33ebc00ff94985fbae38d593cbdc003
[INFO] running `Command { std: "docker" "start" "-a" "384c5e2131e65758f6c431da2296893cb33ebc00ff94985fbae38d593cbdc003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "384c5e2131e65758f6c431da2296893cb33ebc00ff94985fbae38d593cbdc003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384c5e2131e65758f6c431da2296893cb33ebc00ff94985fbae38d593cbdc003", kill_on_drop: false }`
[INFO] [stdout] 384c5e2131e65758f6c431da2296893cb33ebc00ff94985fbae38d593cbdc003
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f28a3db4f26f36f33d6b7357b013bf570a6a5f408561a7c1fb21db38642332f2
[INFO] running `Command { std: "docker" "start" "-a" "f28a3db4f26f36f33d6b7357b013bf570a6a5f408561a7c1fb21db38642332f2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mdo v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "f28a3db4f26f36f33d6b7357b013bf570a6a5f408561a7c1fb21db38642332f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f28a3db4f26f36f33d6b7357b013bf570a6a5f408561a7c1fb21db38642332f2", kill_on_drop: false }`
[INFO] [stdout] f28a3db4f26f36f33d6b7357b013bf570a6a5f408561a7c1fb21db38642332f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbf9798bddca26055d4f6f15ed9fb5189853519d6aa353b5796db7fd24f7e135
[INFO] running `Command { std: "docker" "start" "-a" "fbf9798bddca26055d4f6f15ed9fb5189853519d6aa353b5796db7fd24f7e135", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdo v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "fbf9798bddca26055d4f6f15ed9fb5189853519d6aa353b5796db7fd24f7e135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf9798bddca26055d4f6f15ed9fb5189853519d6aa353b5796db7fd24f7e135", kill_on_drop: false }`
[INFO] [stdout] fbf9798bddca26055d4f6f15ed9fb5189853519d6aa353b5796db7fd24f7e135
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 940c25cfbcba4242e6720e8cdd9ea1653c3a78837a8129d19ea1542e5e133b05
[INFO] running `Command { std: "docker" "start" "-a" "940c25cfbcba4242e6720e8cdd9ea1653c3a78837a8129d19ea1542e5e133b05", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mdo-4947f44fbe03948c)
[INFO] [stdout] test tests::iter_ignore ... ok
[INFO] [stdout] test tests::ign_trick ... ok
[INFO] [stdout] test tests::iter_bind ... ok
[INFO] [stdout] test tests::iter_mdo ... ok
[INFO] [stdout] test tests::let_type ... ok
[INFO] [stdout] test tests::mdo_doc_example ... ok
[INFO] [stdout] test tests::ret_trick ... ok
[INFO] [stdout] test tests::when_trick ... ok
[INFO] [stdout] test tests::option_bind ... ok
[INFO] [stderr]    Doc-tests mdo
[INFO] [stdout] test tests::option_mdo ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - mdo (line 33) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "940c25cfbcba4242e6720e8cdd9ea1653c3a78837a8129d19ea1542e5e133b05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "940c25cfbcba4242e6720e8cdd9ea1653c3a78837a8129d19ea1542e5e133b05", kill_on_drop: false }`
[INFO] [stdout] 940c25cfbcba4242e6720e8cdd9ea1653c3a78837a8129d19ea1542e5e133b05