[INFO] fetching crate rtic-core 0.3.1...
[INFO] testing rtic-core-0.3.1 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate rtic-core 0.3.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rtic-core 0.3.1 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtic-core 0.3.1
[INFO] finished tweaking crates.io crate rtic-core 0.3.1
[INFO] tweaked toml for crates.io crate rtic-core 0.3.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d00e315048028216958b444d98b5fcb06a4848a548fc2d8bde72737b255c225
[INFO] running `Command { std: "docker" "start" "-a" "3d00e315048028216958b444d98b5fcb06a4848a548fc2d8bde72737b255c225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d00e315048028216958b444d98b5fcb06a4848a548fc2d8bde72737b255c225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d00e315048028216958b444d98b5fcb06a4848a548fc2d8bde72737b255c225", kill_on_drop: false }`
[INFO] [stdout] 3d00e315048028216958b444d98b5fcb06a4848a548fc2d8bde72737b255c225
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c58b7f15c6553ed1e4547230457d2c5601417edb9850791564013bac87d93a
[INFO] running `Command { std: "docker" "start" "-a" "42c58b7f15c6553ed1e4547230457d2c5601417edb9850791564013bac87d93a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rtic-core v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "42c58b7f15c6553ed1e4547230457d2c5601417edb9850791564013bac87d93a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c58b7f15c6553ed1e4547230457d2c5601417edb9850791564013bac87d93a", kill_on_drop: false }`
[INFO] [stdout] 42c58b7f15c6553ed1e4547230457d2c5601417edb9850791564013bac87d93a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aafd2ddfa82d806e26f97a1233341a982db7cca9da3fcfeb7a5820e74b2e605c
[INFO] running `Command { std: "docker" "start" "-a" "aafd2ddfa82d806e26f97a1233341a982db7cca9da3fcfeb7a5820e74b2e605c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rtic-core v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "aafd2ddfa82d806e26f97a1233341a982db7cca9da3fcfeb7a5820e74b2e605c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aafd2ddfa82d806e26f97a1233341a982db7cca9da3fcfeb7a5820e74b2e605c", kill_on_drop: false }`
[INFO] [stdout] aafd2ddfa82d806e26f97a1233341a982db7cca9da3fcfeb7a5820e74b2e605c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 52a570a7a1d3b94ca3d0b4c462df725c7dd215247edef5faa4ef3d3f35e099b1
[INFO] running `Command { std: "docker" "start" "-a" "52a570a7a1d3b94ca3d0b4c462df725c7dd215247edef5faa4ef3d3f35e099b1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rtic_core-f46f32bc259816bf)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rtic-core
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - prelude (line 77) ... FAILED
[INFO] [stdout] test src/lib.rs - prelude (line 100) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - prelude (line 77) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `mutex_trait`?
[INFO] [stdout]  --> src/lib.rs:78:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mutex_trait::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^ maybe a missing crate `mutex_trait`?
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:81:18
[INFO] [stdout]   |
[INFO] [stdout] 6 |     a: &mut impl Mutex<T = i32>,
[INFO] [stdout]   |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:82:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     b: &mut impl Mutex<T = i32>,
[INFO] [stdout]   |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:83:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     c: &mut impl Mutex<T = i32>
[INFO] [stdout]   |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - prelude (line 100) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `mutex_trait`?
[INFO] [stdout]  --> src/lib.rs:101:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mutex_trait::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^ maybe a missing crate `mutex_trait`?
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:104:18
[INFO] [stdout]   |
[INFO] [stdout] 6 |     a: &mut impl Mutex<T = i32>,
[INFO] [stdout]   |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:105:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     b: &mut impl Mutex<T = i32>,
[INFO] [stdout]   |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Mutex` in this scope
[INFO] [stdout]  --> src/lib.rs:106:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     c: &mut impl Mutex<T = i32>
[INFO] [stdout]   |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - prelude (line 100)
[INFO] [stdout]     src/lib.rs - prelude (line 77)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "52a570a7a1d3b94ca3d0b4c462df725c7dd215247edef5faa4ef3d3f35e099b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a570a7a1d3b94ca3d0b4c462df725c7dd215247edef5faa4ef3d3f35e099b1", kill_on_drop: false }`
[INFO] [stdout] 52a570a7a1d3b94ca3d0b4c462df725c7dd215247edef5faa4ef3d3f35e099b1