[INFO] fetching crate mutate_once 0.1.1...
[INFO] testing mutate_once-0.1.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate mutate_once 0.1.1 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate mutate_once 0.1.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mutate_once 0.1.1
[INFO] finished tweaking crates.io crate mutate_once 0.1.1
[INFO] tweaked toml for crates.io crate mutate_once 0.1.1 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1662567730b2c558624a39b57ee2c2b6890adc5e4c7baabf41e20dee90cc37f9
[INFO] running `Command { std: "docker" "start" "-a" "1662567730b2c558624a39b57ee2c2b6890adc5e4c7baabf41e20dee90cc37f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1662567730b2c558624a39b57ee2c2b6890adc5e4c7baabf41e20dee90cc37f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1662567730b2c558624a39b57ee2c2b6890adc5e4c7baabf41e20dee90cc37f9", kill_on_drop: false }`
[INFO] [stdout] 1662567730b2c558624a39b57ee2c2b6890adc5e4c7baabf41e20dee90cc37f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f26bcad8086c7fe419c46773d84a88fe4e42eef905314f6b5fba659438cb5df
[INFO] running `Command { std: "docker" "start" "-a" "4f26bcad8086c7fe419c46773d84a88fe4e42eef905314f6b5fba659438cb5df", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutate_once v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "4f26bcad8086c7fe419c46773d84a88fe4e42eef905314f6b5fba659438cb5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f26bcad8086c7fe419c46773d84a88fe4e42eef905314f6b5fba659438cb5df", kill_on_drop: false }`
[INFO] [stdout] 4f26bcad8086c7fe419c46773d84a88fe4e42eef905314f6b5fba659438cb5df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7b36a952361b88e8e7d25e1d8c52aa2642821f14536f49cfaa143810d4fca2e
[INFO] running `Command { std: "docker" "start" "-a" "c7b36a952361b88e8e7d25e1d8c52aa2642821f14536f49cfaa143810d4fca2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mutate_once v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "c7b36a952361b88e8e7d25e1d8c52aa2642821f14536f49cfaa143810d4fca2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b36a952361b88e8e7d25e1d8c52aa2642821f14536f49cfaa143810d4fca2e", kill_on_drop: false }`
[INFO] [stdout] c7b36a952361b88e8e7d25e1d8c52aa2642821f14536f49cfaa143810d4fca2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8b6a176e6b0e87c27a7bd811fc9ccfc5489700cd4ab6ac1e882d42240d7312fc
[INFO] running `Command { std: "docker" "start" "-a" "8b6a176e6b0e87c27a7bd811fc9ccfc5489700cd4ab6ac1e882d42240d7312fc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mutate_once-d305ec255f51e083)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::default ... ok
[INFO] [stdout] test tests::from ... ok
[INFO] [stdout] test tests::multiple_refs ... ok
[INFO] [stdout] test tests::into_inner ... ok
[INFO] [stdout] test tests::repeated_muts ... ok
[INFO] [stdout] test tests::temporary_value ... ok
[INFO] [stdout] test tests::multiple_muts - should panic ... ok
[INFO] [stdout] test tests::mut_after_ref - should panic ... ok
[INFO] [stdout] test tests::ref_while_mut - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/getter.rs (/opt/rustwide/target/debug/deps/getter-39ae773025f2e466)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test single ... ok
[INFO] [stdout] test collection ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutate_once
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - MutOnce<T>::get_ref (line 160) ... ok
[INFO] [stdout] test src/lib.rs - MutOnce<T>::get_mut (line 108) ... ok
[INFO] [stdout] test src/lib.rs - MutOnce<T>::get_ref (line 152) ... ok
[INFO] [stdout] test src/lib.rs - MutOnce<T>::get_mut (line 117) ... ok
[INFO] [stdout] test src/lib.rs - MutOnce (line 59) ... ok
[INFO] [stdout] test src/lib.rs - MutOnce<T>::get_mut (line 125) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8b6a176e6b0e87c27a7bd811fc9ccfc5489700cd4ab6ac1e882d42240d7312fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b6a176e6b0e87c27a7bd811fc9ccfc5489700cd4ab6ac1e882d42240d7312fc", kill_on_drop: false }`
[INFO] [stdout] 8b6a176e6b0e87c27a7bd811fc9ccfc5489700cd4ab6ac1e882d42240d7312fc