[INFO] fetching crate rtic-core 0.3.1...
[INFO] testing rtic-core-0.3.1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate rtic-core 0.3.1 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate rtic-core 0.3.1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30c89b62d04a6853abe9ee9574b24a7b0d145849ea1e519b17311f384f1b43fe
[INFO] running `Command { std: "docker" "start" "-a" "30c89b62d04a6853abe9ee9574b24a7b0d145849ea1e519b17311f384f1b43fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30c89b62d04a6853abe9ee9574b24a7b0d145849ea1e519b17311f384f1b43fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30c89b62d04a6853abe9ee9574b24a7b0d145849ea1e519b17311f384f1b43fe", kill_on_drop: false }`
[INFO] [stdout] 30c89b62d04a6853abe9ee9574b24a7b0d145849ea1e519b17311f384f1b43fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51ea867fec39a8e59bb242d90d22ee7aaa07e110201c8f42e6fe22d0053d5b3a
[INFO] running `Command { std: "docker" "start" "-a" "51ea867fec39a8e59bb242d90d22ee7aaa07e110201c8f42e6fe22d0053d5b3a", 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" "51ea867fec39a8e59bb242d90d22ee7aaa07e110201c8f42e6fe22d0053d5b3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ea867fec39a8e59bb242d90d22ee7aaa07e110201c8f42e6fe22d0053d5b3a", kill_on_drop: false }`
[INFO] [stdout] 51ea867fec39a8e59bb242d90d22ee7aaa07e110201c8f42e6fe22d0053d5b3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a78a946eca0dfb49b0689803459bc96576db3ff27d1e7fd812ac19a2d35da49b
[INFO] running `Command { std: "docker" "start" "-a" "a78a946eca0dfb49b0689803459bc96576db3ff27d1e7fd812ac19a2d35da49b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rtic-core v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "a78a946eca0dfb49b0689803459bc96576db3ff27d1e7fd812ac19a2d35da49b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a78a946eca0dfb49b0689803459bc96576db3ff27d1e7fd812ac19a2d35da49b", kill_on_drop: false }`
[INFO] [stdout] a78a946eca0dfb49b0689803459bc96576db3ff27d1e7fd812ac19a2d35da49b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d450dda5436b9cd962805e318ab9fb54fd8d5c0606074a7ba15fdcc1789b5dd5
[INFO] running `Command { std: "docker" "start" "-a" "d450dda5436b9cd962805e318ab9fb54fd8d5c0606074a7ba15fdcc1789b5dd5", 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-d40d9a044326f882)
[INFO] [stdout] 
[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] [stderr]    Doc-tests rtic-core
[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 0.07s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "d450dda5436b9cd962805e318ab9fb54fd8d5c0606074a7ba15fdcc1789b5dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d450dda5436b9cd962805e318ab9fb54fd8d5c0606074a7ba15fdcc1789b5dd5", kill_on_drop: false }`
[INFO] [stdout] d450dda5436b9cd962805e318ab9fb54fd8d5c0606074a7ba15fdcc1789b5dd5