[INFO] fetching crate take_mut 0.2.2...
[INFO] testing take_mut-0.2.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate take_mut 0.2.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate take_mut 0.2.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate take_mut 0.2.2
[INFO] finished tweaking crates.io crate take_mut 0.2.2
[INFO] tweaked toml for crates.io crate take_mut 0.2.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b5bde13edfeee695c4c9941e25304e608ed0ab645d0f01cbefd9afd4294dbc2
[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" "2b5bde13edfeee695c4c9941e25304e608ed0ab645d0f01cbefd9afd4294dbc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b5bde13edfeee695c4c9941e25304e608ed0ab645d0f01cbefd9afd4294dbc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b5bde13edfeee695c4c9941e25304e608ed0ab645d0f01cbefd9afd4294dbc2", kill_on_drop: false }`
[INFO] [stdout] 2b5bde13edfeee695c4c9941e25304e608ed0ab645d0f01cbefd9afd4294dbc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--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] 674b05302c8c350c8de7d6e507ea87945b87670d32110e44a9520fbf39e1e699
[INFO] running `Command { std: "docker" "start" "-a" "674b05302c8c350c8de7d6e507ea87945b87670d32110e44a9520fbf39e1e699", kill_on_drop: false }`
[INFO] [stderr]    Compiling take_mut v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "674b05302c8c350c8de7d6e507ea87945b87670d32110e44a9520fbf39e1e699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "674b05302c8c350c8de7d6e507ea87945b87670d32110e44a9520fbf39e1e699", kill_on_drop: false }`
[INFO] [stdout] 674b05302c8c350c8de7d6e507ea87945b87670d32110e44a9520fbf39e1e699
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 24e0400133c54db19c900c9238adf877d6edb6cbaf70be5c98c8d8d6e17db4fe
[INFO] running `Command { std: "docker" "start" "-a" "24e0400133c54db19c900c9238adf877d6edb6cbaf70be5c98c8d8d6e17db4fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling take_mut v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/lib.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |     enum Foo {A, B};
[INFO] [stdout]    |                    ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:105:20
[INFO] [stdout]     |
[INFO] [stdout] 105 |     enum Foo {A, B};
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:125:23
[INFO] [stdout]     |
[INFO] [stdout] 125 |     enum Foo {A, B, C};
[INFO] [stdout]     |                       ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             panic!("panic");
[INFO] [stdout]     |             --------------- any code following this expression is unreachable
[INFO] [stdout] 141 |             Foo::B
[INFO] [stdout]     |             ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/scoped.rs:153:14
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let (a, a_hole) = scope.take(&mut bar.a);
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/scoped.rs:154:14
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let (b, b_hole) = scope.take(&mut bar.b);
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/scoped.rs:170:18
[INFO] [stdout]     |
[INFO] [stdout] 170 |             let (t, hole) = scope.take_or_recover(&mut foo, || Foo);
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hole`
[INFO] [stdout]    --> src/scoped.rs:170:21
[INFO] [stdout]     |
[INFO] [stdout] 170 |             let (t, hole) = scope.take_or_recover(&mut foo, || Foo);
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_hole`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "24e0400133c54db19c900c9238adf877d6edb6cbaf70be5c98c8d8d6e17db4fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e0400133c54db19c900c9238adf877d6edb6cbaf70be5c98c8d8d6e17db4fe", kill_on_drop: false }`
[INFO] [stdout] 24e0400133c54db19c900c9238adf877d6edb6cbaf70be5c98c8d8d6e17db4fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0bce3f268756a53997f44a31dc1275464df68a045555537bdf21355076d9f90c
[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" "0bce3f268756a53997f44a31dc1275464df68a045555537bdf21355076d9f90c", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/lib.rs:46:20
[INFO] [stderr]    |
[INFO] [stderr] 46 |     enum Foo {A, B};
[INFO] [stderr]    |                    ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:105:20
[INFO] [stderr]     |
[INFO] [stderr] 105 |     enum Foo {A, B};
[INFO] [stderr]     |                    ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:125:23
[INFO] [stderr]     |
[INFO] [stderr] 125 |     enum Foo {A, B, C};
[INFO] [stderr]     |                       ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             panic!("panic");
[INFO] [stderr]     |             --------------- any code following this expression is unreachable
[INFO] [stderr] 141 |             Foo::B
[INFO] [stderr]     |             ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/scoped.rs:153:14
[INFO] [stderr]     |
[INFO] [stderr] 153 |         let (a, a_hole) = scope.take(&mut bar.a);
[INFO] [stderr]     |              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stdout] running 5 tests
[INFO] [stderr]    --> src/scoped.rs:154:14
[INFO] [stdout] test it_works ... ok
[INFO] [stderr]     |
[INFO] [stdout] test it_works_recover ... ok
[INFO] [stderr] 154 |         let (b, b_hole) = scope.take(&mut bar.b);
[INFO] [stdout] test scoped::scope_based_take ... ok
[INFO] [stderr]     |              ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] test scoped::panic_on_recovered_panic ... ok
[INFO] [stderr] 
[INFO] [stdout] test it_works_recover_panic ... ok
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stdout] 
[INFO] [stderr]    --> src/scoped.rs:170:18
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 170 |             let (t, hole) = scope.take_or_recover(&mut foo, || Foo);
[INFO] [stderr]     |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hole`
[INFO] [stderr]    --> src/scoped.rs:170:21
[INFO] [stderr]     |
[INFO] [stderr] 170 |             let (t, hole) = scope.take_or_recover(&mut foo, || Foo);
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_hole`
[INFO] [stderr] 
[INFO] [stderr] warning: `take_mut` (lib test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/take_mut-09c323cc0bcaaffb)
[INFO] [stderr]    Doc-tests take_mut
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/scoped.rs - scoped (line 17) ... ignored
[INFO] [stdout] test src/scoped.rs - scoped (line 5) ... ok
[INFO] [stdout] test src/lib.rs - take_or_recover (line 71) ... ok
[INFO] [stdout] test src/lib.rs - take (line 21) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.50s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0bce3f268756a53997f44a31dc1275464df68a045555537bdf21355076d9f90c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bce3f268756a53997f44a31dc1275464df68a045555537bdf21355076d9f90c", kill_on_drop: false }`
[INFO] [stdout] 0bce3f268756a53997f44a31dc1275464df68a045555537bdf21355076d9f90c