[INFO] fetching crate mucell 0.3.5...
[INFO] testing mucell-0.3.5 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate mucell 0.3.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mucell 0.3.5 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 37a13743a2ae681a1351c511f7a700eb64acc1fd177c377dc9ec089788ff1df8
[INFO] running `Command { std: "docker" "start" "-a" "37a13743a2ae681a1351c511f7a700eb64acc1fd177c377dc9ec089788ff1df8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37a13743a2ae681a1351c511f7a700eb64acc1fd177c377dc9ec089788ff1df8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37a13743a2ae681a1351c511f7a700eb64acc1fd177c377dc9ec089788ff1df8", kill_on_drop: false }`
[INFO] [stdout] 37a13743a2ae681a1351c511f7a700eb64acc1fd177c377dc9ec089788ff1df8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98ed96ea4c91e73cc0a4ea91455a4b15d9d2d50d3b74c5fe0060a3e74dbe704c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "98ed96ea4c91e73cc0a4ea91455a4b15d9d2d50d3b74c5fe0060a3e74dbe704c", kill_on_drop: false }`
[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 0.31s
[INFO] running `Command { std: "docker" "inspect" "98ed96ea4c91e73cc0a4ea91455a4b15d9d2d50d3b74c5fe0060a3e74dbe704c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ed96ea4c91e73cc0a4ea91455a4b15d9d2d50d3b74c5fe0060a3e74dbe704c", kill_on_drop: false }`
[INFO] [stdout] 98ed96ea4c91e73cc0a4ea91455a4b15d9d2d50d3b74c5fe0060a3e74dbe704c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0082ce599258fe027cba6536782830e6439fd0be9ad1d75d6988f44027c35827
[INFO] running `Command { std: "docker" "start" "-a" "0082ce599258fe027cba6536782830e6439fd0be9ad1d75d6988f44027c35827", kill_on_drop: false }`
[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 0.65s
[INFO] running `Command { std: "docker" "inspect" "0082ce599258fe027cba6536782830e6439fd0be9ad1d75d6988f44027c35827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0082ce599258fe027cba6536782830e6439fd0be9ad1d75d6988f44027c35827", kill_on_drop: false }`
[INFO] [stdout] 0082ce599258fe027cba6536782830e6439fd0be9ad1d75d6988f44027c35827
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c307131c9a75372d158d9ad6b128454cc7d6738c2eb97eafee89cba1994754cd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c307131c9a75372d158d9ad6b128454cc7d6738c2eb97eafee89cba1994754cd", 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: `mucell` (lib test) generated 1 warning (1 duplicate)
[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` (example "vector_munger") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mucell-7c6e22885b793d41)
[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>::into_inner (line 136) ... ok
[INFO] [stdout] test src/lib.rs - Ref::into_owned (line 338) ... ok
[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 - Ref::into_inner (line 311) ... ok
[INFO] [stdout] test src/lib.rs - Ref::filter_map_unsafe (line 428) ... 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 0.91s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c307131c9a75372d158d9ad6b128454cc7d6738c2eb97eafee89cba1994754cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c307131c9a75372d158d9ad6b128454cc7d6738c2eb97eafee89cba1994754cd", kill_on_drop: false }`
[INFO] [stdout] c307131c9a75372d158d9ad6b128454cc7d6738c2eb97eafee89cba1994754cd