[INFO] fetching crate irrefutable 0.1.1...
[INFO] testing irrefutable-0.1.1 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate irrefutable 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate irrefutable 0.1.1 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate irrefutable 0.1.1
[INFO] finished tweaking crates.io crate irrefutable 0.1.1
[INFO] tweaked toml for crates.io crate irrefutable 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 319168b76c60dbcb183e68ea766a39e0ffa22f97c3375182f63c1973709c894b
[INFO] running `"docker" "start" "-a" "319168b76c60dbcb183e68ea766a39e0ffa22f97c3375182f63c1973709c894b"`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling irrefutable v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `token::Paren`
[INFO] [stderr]  --> src/irrefutable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     token::Paren,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Panic`
[INFO] [stderr]   --> src/irrefutable.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     Panic { lit_str: LitStr },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.68s
[INFO] running `"docker" "inspect" "319168b76c60dbcb183e68ea766a39e0ffa22f97c3375182f63c1973709c894b"`
[INFO] running `"docker" "rm" "-f" "319168b76c60dbcb183e68ea766a39e0ffa22f97c3375182f63c1973709c894b"`
[INFO] [stdout] 319168b76c60dbcb183e68ea766a39e0ffa22f97c3375182f63c1973709c894b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7d208a174ba068b3a48b8089e9c6472dc7ee930b3b533dcce33b0e9df90c0f8d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7d208a174ba068b3a48b8089e9c6472dc7ee930b3b533dcce33b0e9df90c0f8d"`
[INFO] [stderr]    Compiling irrefutable v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `token::Paren`
[INFO] [stderr]  --> src/irrefutable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     token::Paren,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Panic`
[INFO] [stderr]   --> src/irrefutable.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     Panic { lit_str: LitStr },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `token::Paren`
[INFO] [stderr]  --> src/irrefutable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     token::Paren,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Panic`
[INFO] [stderr]   --> src/irrefutable.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     Panic { lit_str: LitStr },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "7d208a174ba068b3a48b8089e9c6472dc7ee930b3b533dcce33b0e9df90c0f8d"`
[INFO] running `"docker" "rm" "-f" "7d208a174ba068b3a48b8089e9c6472dc7ee930b3b533dcce33b0e9df90c0f8d"`
[INFO] [stdout] 7d208a174ba068b3a48b8089e9c6472dc7ee930b3b533dcce33b0e9df90c0f8d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stdout] a2b24cc5f7c6e331c95fec8822e248a00cae90a2acbfaf84c4b067a49bdd66ce
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "a2b24cc5f7c6e331c95fec8822e248a00cae90a2acbfaf84c4b067a49bdd66ce"`
[INFO] [stderr] warning: unused import: `token::Paren`
[INFO] [stderr]  --> src/irrefutable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     token::Paren,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Panic`
[INFO] [stderr]   --> src/irrefutable.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     Panic { lit_str: LitStr },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `token::Paren`
[INFO] [stderr]  --> src/irrefutable.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     token::Paren,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Panic`
[INFO] [stderr]   --> src/irrefutable.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     Panic { lit_str: LitStr },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/irrefutable-3b7ef3311fc83703
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test-046b6c6ddfac77e9
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test unreachable::tuple_struct ... ok
[INFO] [stdout] test unreachable::tuple ... ok
[INFO] [stdout] test r#return::tuple_struct ... ok
[INFO] [stdout] test unreachable::reference ... ok
[INFO] [stdout] test unreachable::r#struct ... ok
[INFO] [stdout] test unreachable::ident ... ok
[INFO] [stdout] test panic::tuple_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests irrefutable
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - irrefutable (line 21) ... ok
[INFO] [stdout] test src/lib.rs - irrefutable (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a2b24cc5f7c6e331c95fec8822e248a00cae90a2acbfaf84c4b067a49bdd66ce"`
[INFO] running `"docker" "rm" "-f" "a2b24cc5f7c6e331c95fec8822e248a00cae90a2acbfaf84c4b067a49bdd66ce"`
[INFO] [stdout] a2b24cc5f7c6e331c95fec8822e248a00cae90a2acbfaf84c4b067a49bdd66ce