[INFO] fetching crate coachman 0.3.0...
[INFO] testing coachman-0.3.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate coachman 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate coachman 0.3.0
[INFO] finished tweaking crates.io crate coachman 0.3.0
[INFO] tweaked toml for crates.io crate coachman 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate coachman 0.3.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate coachman 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c15a78c3de92964538dc956684c3c02b383d0c14328d72624e09ee57c534fca
[INFO] running `Command { std: "docker" "start" "-a" "0c15a78c3de92964538dc956684c3c02b383d0c14328d72624e09ee57c534fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c15a78c3de92964538dc956684c3c02b383d0c14328d72624e09ee57c534fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c15a78c3de92964538dc956684c3c02b383d0c14328d72624e09ee57c534fca", kill_on_drop: false }`
[INFO] [stdout] 0c15a78c3de92964538dc956684c3c02b383d0c14328d72624e09ee57c534fca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] ff06cc011f56c2b457debcf5c7cca2d1b72bf5c2511f432d0db021b096019724
[INFO] running `Command { std: "docker" "start" "-a" "ff06cc011f56c2b457debcf5c7cca2d1b72bf5c2511f432d0db021b096019724", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling tokio-macros v1.6.0
[INFO] [stderr]    Compiling coachman v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.94s
[INFO] running `Command { std: "docker" "inspect" "ff06cc011f56c2b457debcf5c7cca2d1b72bf5c2511f432d0db021b096019724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff06cc011f56c2b457debcf5c7cca2d1b72bf5c2511f432d0db021b096019724", kill_on_drop: false }`
[INFO] [stdout] ff06cc011f56c2b457debcf5c7cca2d1b72bf5c2511f432d0db021b096019724
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] bc36c8f8bcb01afbba9d00311f77149a2535de7d78533beac6d1b737b5d00299
[INFO] running `Command { std: "docker" "start" "-a" "bc36c8f8bcb01afbba9d00311f77149a2535de7d78533beac6d1b737b5d00299", kill_on_drop: false }`
[INFO] [stderr]    Compiling coachman v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/task_manager.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     tokio::time::timeout(time::Duration::from_secs(5), task_manager.process(false)).await;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let _ = tokio::time::timeout(time::Duration::from_secs(5), task_manager.process(false)).await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused output of future returned by `tokio::task::yield_now` that must be used
[INFO] [stdout]    --> src/manager.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |         tokio::task::yield_now().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: yield_now does nothing unless polled/`await`-ed
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 295 |         let _ = tokio::task::yield_now().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused output of future returned by `tokio::task::yield_now` that must be used
[INFO] [stdout]    --> src/manager.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |         tokio::task::yield_now().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: yield_now does nothing unless polled/`await`-ed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let _ = tokio::task::yield_now().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "bc36c8f8bcb01afbba9d00311f77149a2535de7d78533beac6d1b737b5d00299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc36c8f8bcb01afbba9d00311f77149a2535de7d78533beac6d1b737b5d00299", kill_on_drop: false }`
[INFO] [stdout] bc36c8f8bcb01afbba9d00311f77149a2535de7d78533beac6d1b737b5d00299
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d4afd6a9a8bfb2ad6e6e7ddb93cc30555c5d3a1258df82f127c98d666e5d6043
[INFO] running `Command { std: "docker" "start" "-a" "d4afd6a9a8bfb2ad6e6e7ddb93cc30555c5d3a1258df82f127c98d666e5d6043", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> examples/task_manager.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     tokio::time::timeout(time::Duration::from_secs(5), task_manager.process(false)).await;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let _ = tokio::time::timeout(time::Duration::from_secs(5), task_manager.process(false)).await;
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `coachman` (example "task_manager") generated 1 warning
[INFO] [stderr] warning: unused output of future returned by `tokio::task::yield_now` that must be used
[INFO] [stderr]    --> src/manager.rs:295:9
[INFO] [stderr]     |
[INFO] [stderr] 295 |         tokio::task::yield_now().await;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: yield_now does nothing unless polled/`await`-ed
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 295 |         let _ = tokio::task::yield_now().await;
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused output of future returned by `tokio::task::yield_now` that must be used
[INFO] [stderr]    --> src/manager.rs:304:9
[INFO] [stderr]     |
[INFO] [stderr] 304 |         tokio::task::yield_now().await;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: yield_now does nothing unless polled/`await`-ed
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 304 |         let _ = tokio::task::yield_now().await;
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `coachman` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/coachman-277a6845fc5aeb1c)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test manager::tests::test_task_abortion ... ok
[INFO] [stdout] test manager::tests::test_task_manager_cancellation ... ok
[INFO] [stdout] test task::tests::test_cancellation_order ... ok
[INFO] [stdout] test manager::tests::test_task_manager_overflow ... ok
[INFO] [stdout] test manager::tests::test_processing_loop ... ok
[INFO] [stdout] test manager::tests::test_task_detach ... ok
[INFO] [stdout] test task::tests::test_is_task_canceled ... ok
[INFO] [stdout] test manager::tests::test_task_manager_abortion ... ok
[INFO] [stdout] test task::tests::test_task_abortion ... ok
[INFO] [stdout] test task::tests::test_task_cancellation ... ok
[INFO] [stdout] test manager::tests::test_task_unwinding_disabled ... ok
[INFO] [stdout] test manager::tests::test_task_unwinding_enabled - should panic ... ok
[INFO] [stdout] test task::tests::test_task_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d4afd6a9a8bfb2ad6e6e7ddb93cc30555c5d3a1258df82f127c98d666e5d6043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4afd6a9a8bfb2ad6e6e7ddb93cc30555c5d3a1258df82f127c98d666e5d6043", kill_on_drop: false }`
[INFO] [stdout] d4afd6a9a8bfb2ad6e6e7ddb93cc30555c5d3a1258df82f127c98d666e5d6043