[INFO] fetching crate mucell 0.3.5...
[INFO] testing mucell-0.3.5 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate mucell 0.3.5 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate mucell 0.3.5 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mucell 0.3.5
[INFO] finished tweaking crates.io crate mucell 0.3.5
[INFO] tweaked toml for crates.io crate mucell 0.3.5 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5046111da3d662f9a83e21d22b91a67bc78e1251cbb94d80e56f988415b447f3
[INFO] running `Command { std: "docker" "start" "-a" "5046111da3d662f9a83e21d22b91a67bc78e1251cbb94d80e56f988415b447f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5046111da3d662f9a83e21d22b91a67bc78e1251cbb94d80e56f988415b447f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5046111da3d662f9a83e21d22b91a67bc78e1251cbb94d80e56f988415b447f3", kill_on_drop: false }`
[INFO] [stdout] 5046111da3d662f9a83e21d22b91a67bc78e1251cbb94d80e56f988415b447f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5b9a51785f3011038e29e6ed993031045f7caf2834639eb1fac4e46858bda16
[INFO] running `Command { std: "docker" "start" "-a" "d5b9a51785f3011038e29e6ed993031045f7caf2834639eb1fac4e46858bda16", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mucell v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         unsafe { self.value.into_inner() }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:68:20
[INFO] [stdout]     |
[INFO] [stdout] 68  | #![warn(bad_style, unused, missing_docs)]
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "d5b9a51785f3011038e29e6ed993031045f7caf2834639eb1fac4e46858bda16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5b9a51785f3011038e29e6ed993031045f7caf2834639eb1fac4e46858bda16", kill_on_drop: false }`
[INFO] [stdout] d5b9a51785f3011038e29e6ed993031045f7caf2834639eb1fac4e46858bda16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0824c58c416736b0aa971c96b922b5f583b7c366616f8905e9d64ffb166b6c7e
[INFO] running `Command { std: "docker" "start" "-a" "0824c58c416736b0aa971c96b922b5f583b7c366616f8905e9d64ffb166b6c7e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         unsafe { self.value.into_inner() }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:68:20
[INFO] [stdout]     |
[INFO] [stdout] 68  | #![warn(bad_style, unused, missing_docs)]
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mucell v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/vector_munger.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use] extern crate mucell;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         unsafe { self.value.into_inner() }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:68:20
[INFO] [stdout]     |
[INFO] [stdout] 68  | #![warn(bad_style, unused, missing_docs)]
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "0824c58c416736b0aa971c96b922b5f583b7c366616f8905e9d64ffb166b6c7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0824c58c416736b0aa971c96b922b5f583b7c366616f8905e9d64ffb166b6c7e", kill_on_drop: false }`
[INFO] [stdout] 0824c58c416736b0aa971c96b922b5f583b7c366616f8905e9d64ffb166b6c7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d5ee76169358cb3fbca3b5a76bfad5858bc3f694bb72a7ff8078cea57f417bc1
[INFO] running `Command { std: "docker" "start" "-a" "d5ee76169358cb3fbca3b5a76bfad5858bc3f694bb72a7ff8078cea57f417bc1", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         unsafe { self.value.into_inner() }
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:68:20
[INFO] [stderr]     |
[INFO] [stderr] 68  | #![warn(bad_style, unused, missing_docs)]
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` implied by `#[warn(unused)]`
[INFO] [stderr] 
[INFO] [stderr] warning: `mucell` (lib) generated 1 warning
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/vector_munger.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use] extern crate mucell;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mucell` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `mucell` (example "vector_munger") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mucell-47f225272949e151)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_try_mutate_in_try_mutate ... ok
[INFO] [stdout] test unsafe_subversion_demo ... ok
[INFO] [stdout] test test_borrow_in_try_mutate - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mucell
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - MuCell<T>::new (line 116) ... ok
[INFO] [stdout] test src/lib.rs - Ref::map_unsafe (line 375) ... ok
[INFO] [stdout] test src/lib.rs - MuCell<T>::into_inner (line 136) ... ok
[INFO] [stdout] test src/lib.rs - Ref::filter_map_unsafe (line 428) ... ok
[INFO] [stdout] test src/lib.rs - Ref::into_owned (line 338) ... ok
[INFO] [stdout] test src/lib.rs - Ref::into_inner (line 311) ... ok
[INFO] [stdout] test src/lib.rs - (line 27) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d5ee76169358cb3fbca3b5a76bfad5858bc3f694bb72a7ff8078cea57f417bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ee76169358cb3fbca3b5a76bfad5858bc3f694bb72a7ff8078cea57f417bc1", kill_on_drop: false }`
[INFO] [stdout] d5ee76169358cb3fbca3b5a76bfad5858bc3f694bb72a7ff8078cea57f417bc1