[INFO] fetching crate rich-result 0.1.2...
[INFO] testing rich-result-0.1.2 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate rich-result 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rich-result 0.1.2
[INFO] finished tweaking crates.io crate rich-result 0.1.2
[INFO] tweaked toml for crates.io crate rich-result 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rich-result 0.1.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c8c0363256ead2d34220797b57e4cdcbdf132cce5832ff2fd144280753497888
[INFO] running `Command { std: "docker" "start" "-a" "c8c0363256ead2d34220797b57e4cdcbdf132cce5832ff2fd144280753497888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8c0363256ead2d34220797b57e4cdcbdf132cce5832ff2fd144280753497888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8c0363256ead2d34220797b57e4cdcbdf132cce5832ff2fd144280753497888", kill_on_drop: false }`
[INFO] [stdout] c8c0363256ead2d34220797b57e4cdcbdf132cce5832ff2fd144280753497888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5f07df680359e48bfb363909b15302832a5f69d44b0e844e52837836d4e17158
[INFO] running `Command { std: "docker" "start" "-a" "5f07df680359e48bfb363909b15302832a5f69d44b0e844e52837836d4e17158", kill_on_drop: false }`
[INFO] [stderr]    Compiling rich-result v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "5f07df680359e48bfb363909b15302832a5f69d44b0e844e52837836d4e17158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f07df680359e48bfb363909b15302832a5f69d44b0e844e52837836d4e17158", kill_on_drop: false }`
[INFO] [stdout] 5f07df680359e48bfb363909b15302832a5f69d44b0e844e52837836d4e17158
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 54742f54e2d1de1e682233d795c2d6604cc8f68ae765c9e197fdd5d2eb767983
[INFO] running `Command { std: "docker" "start" "-a" "54742f54e2d1de1e682233d795c2d6604cc8f68ae765c9e197fdd5d2eb767983", kill_on_drop: false }`
[INFO] [stderr]    Compiling rich-result v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `LocalResult` that must be used
[INFO] [stdout]     --> src/lib.rs:1058:49
[INFO] [stdout]      |
[INFO] [stdout] 1058 |             fn this_should_warn() -> ResultTy { result()?; Ok(OkTy) }
[INFO] [stdout]      |                                                 ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1058 |             fn this_should_warn() -> ResultTy { let _ = result()?; Ok(OkTy) }
[INFO] [stdout]      |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "54742f54e2d1de1e682233d795c2d6604cc8f68ae765c9e197fdd5d2eb767983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54742f54e2d1de1e682233d795c2d6604cc8f68ae765c9e197fdd5d2eb767983", kill_on_drop: false }`
[INFO] [stdout] 54742f54e2d1de1e682233d795c2d6604cc8f68ae765c9e197fdd5d2eb767983
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5161de337244c732add4703cf5ad040f59b8312118fe4fc83664c37d100c8fdd
[INFO] running `Command { std: "docker" "start" "-a" "5161de337244c732add4703cf5ad040f59b8312118fe4fc83664c37d100c8fdd", kill_on_drop: false }`
[INFO] [stderr] warning: unused `LocalResult` that must be used
[INFO] [stderr]     --> src/lib.rs:1058:49
[INFO] [stderr]      |
[INFO] [stderr] 1058 |             fn this_should_warn() -> ResultTy { result()?; Ok(OkTy) }
[INFO] [stderr]      |                                                 ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]      |
[INFO] [stderr] 1058 |             fn this_should_warn() -> ResultTy { let _ = result()?; Ok(OkTy) }
[INFO] [stderr]      |                                                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rich-result` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/rich_result-d156ad5f94beff75)
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_collected_errs_std ... ok
[INFO] [stdout] test tests::test_collected_layered ... ok
[INFO] [stdout] test tests::test_from_collected_errs ... ok
[INFO] [stdout] test tests::test_from_collected_errs_mixed ... ok
[INFO] [stdout] test tests::test_from_collected_recoverables ... ok
[INFO] [stdout] test tests::test_from_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5161de337244c732add4703cf5ad040f59b8312118fe4fc83664c37d100c8fdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5161de337244c732add4703cf5ad040f59b8312118fe4fc83664c37d100c8fdd", kill_on_drop: false }`
[INFO] [stdout] 5161de337244c732add4703cf5ad040f59b8312118fe4fc83664c37d100c8fdd