[INFO] fetching crate mutate_once 0.1.2...
[INFO] testing mutate_once-0.1.2 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate mutate_once 0.1.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate mutate_once 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mutate_once 0.1.2
[INFO] tweaked toml for crates.io crate mutate_once 0.1.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutate_once 0.1.2 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mutate_once 0.1.2 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e319b554e6559748ab5bc2a5b673d11415db90d9bd893e8131bc20a849fe2a0
[INFO] running `Command { std: "docker" "start" "-a" "6e319b554e6559748ab5bc2a5b673d11415db90d9bd893e8131bc20a849fe2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e319b554e6559748ab5bc2a5b673d11415db90d9bd893e8131bc20a849fe2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e319b554e6559748ab5bc2a5b673d11415db90d9bd893e8131bc20a849fe2a0", kill_on_drop: false }`
[INFO] [stdout] 6e319b554e6559748ab5bc2a5b673d11415db90d9bd893e8131bc20a849fe2a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66816d7d16d5058a812a42507ed9c2e5b75f18055afaefacf795bebc0b926818
[INFO] running `Command { std: "docker" "start" "-a" "66816d7d16d5058a812a42507ed9c2e5b75f18055afaefacf795bebc0b926818", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutate_once v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "66816d7d16d5058a812a42507ed9c2e5b75f18055afaefacf795bebc0b926818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66816d7d16d5058a812a42507ed9c2e5b75f18055afaefacf795bebc0b926818", kill_on_drop: false }`
[INFO] [stdout] 66816d7d16d5058a812a42507ed9c2e5b75f18055afaefacf795bebc0b926818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e325b0603ec4ddd3405296a841f5cc9e6fc338c4a3e87edfd50b1c86a2df5606
[INFO] running `Command { std: "docker" "start" "-a" "e325b0603ec4ddd3405296a841f5cc9e6fc338c4a3e87edfd50b1c86a2df5606", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutate_once v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "e325b0603ec4ddd3405296a841f5cc9e6fc338c4a3e87edfd50b1c86a2df5606", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e325b0603ec4ddd3405296a841f5cc9e6fc338c4a3e87edfd50b1c86a2df5606", kill_on_drop: false }`
[INFO] [stdout] e325b0603ec4ddd3405296a841f5cc9e6fc338c4a3e87edfd50b1c86a2df5606
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 14e5285370ed2e5669147f1b331bd93e0c90561063f588f5f36cc61317f5f936
[INFO] running `Command { std: "docker" "start" "-a" "14e5285370ed2e5669147f1b331bd93e0c90561063f588f5f36cc61317f5f936", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] test tests::default ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutate_once-0572d851f8e6b910)
[INFO] [stdout] test tests::into_inner ... ok
[INFO] [stdout] test tests::from ... ok
[INFO] [stdout] test tests::multiple_refs ... 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] [stderr]      Running tests/getter.rs (/opt/rustwide/target/debug/deps/getter-ddc16eab1b8b6584)
[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 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test collection ... ok
[INFO] [stdout] test single ... 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_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_ref (line 160) ... ok
[INFO] [stdout] test src/lib.rs - MutOnce<T>::get_mut (line 125) ... 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] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.56s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "14e5285370ed2e5669147f1b331bd93e0c90561063f588f5f36cc61317f5f936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e5285370ed2e5669147f1b331bd93e0c90561063f588f5f36cc61317f5f936", kill_on_drop: false }`
[INFO] [stdout] 14e5285370ed2e5669147f1b331bd93e0c90561063f588f5f36cc61317f5f936