[INFO] fetching crate systemf 0.1.0...
[INFO] testing systemf-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate systemf 0.1.0 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate systemf 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate systemf 0.1.0
[INFO] finished tweaking crates.io crate systemf 0.1.0
[INFO] tweaked toml for crates.io crate systemf 0.1.0 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5a4d420c241289972588c88aeaf31c2f8f37f96554d33b7e5a98c6d6a92096a
[INFO] running `Command { std: "docker" "start" "-a" "a5a4d420c241289972588c88aeaf31c2f8f37f96554d33b7e5a98c6d6a92096a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5a4d420c241289972588c88aeaf31c2f8f37f96554d33b7e5a98c6d6a92096a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a4d420c241289972588c88aeaf31c2f8f37f96554d33b7e5a98c6d6a92096a", kill_on_drop: false }`
[INFO] [stdout] a5a4d420c241289972588c88aeaf31c2f8f37f96554d33b7e5a98c6d6a92096a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c51bb3e6b044a1640a8f5860e3bf5ff18c51197b20a74760c80101fdb396e1c6
[INFO] running `Command { std: "docker" "start" "-a" "c51bb3e6b044a1640a8f5860e3bf5ff18c51197b20a74760c80101fdb396e1c6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling systemf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.75s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c51bb3e6b044a1640a8f5860e3bf5ff18c51197b20a74760c80101fdb396e1c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c51bb3e6b044a1640a8f5860e3bf5ff18c51197b20a74760c80101fdb396e1c6", kill_on_drop: false }`
[INFO] [stdout] c51bb3e6b044a1640a8f5860e3bf5ff18c51197b20a74760c80101fdb396e1c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a36ea64e523858eb25cd05cf2a0f1403e280c3e36f88fcd2ab98f9a7cb92b147
[INFO] running `Command { std: "docker" "start" "-a" "a36ea64e523858eb25cd05cf2a0f1403e280c3e36f88fcd2ab98f9a7cb92b147", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling systemf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot test inner items
[INFO] [stdout]   --> src/lib.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         #[test]
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnameable_test_items)]` on by default
[INFO] [stdout]    = note: this warning originates in the attribute macro `test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         __command.status()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |             systemf!("echo hello, world!");
[INFO] [stdout]    |             ------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `systemf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "a36ea64e523858eb25cd05cf2a0f1403e280c3e36f88fcd2ab98f9a7cb92b147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a36ea64e523858eb25cd05cf2a0f1403e280c3e36f88fcd2ab98f9a7cb92b147", kill_on_drop: false }`
[INFO] [stdout] a36ea64e523858eb25cd05cf2a0f1403e280c3e36f88fcd2ab98f9a7cb92b147
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a12044607f6934bfc0ca04d7c156391ae044226e8913427ac3dc071a9877baf
[INFO] running `Command { std: "docker" "start" "-a" "2a12044607f6934bfc0ca04d7c156391ae044226e8913427ac3dc071a9877baf", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/lib.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `systemf` (lib) generated 1 warning
[INFO] [stderr] warning: cannot test inner items
[INFO] [stderr]   --> src/lib.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         #[test]
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unnameable_test_items)]` on by default
[INFO] [stderr]    = note: this warning originates in the attribute macro `test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         __command.status()
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 30 |             systemf!("echo hello, world!");
[INFO] [stderr]    |             ------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `systemf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `systemf` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/systemf-0d3205d0f27d1954)
[INFO] [stderr]    Doc-tests systemf
[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] [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] running `Command { std: "docker" "inspect" "2a12044607f6934bfc0ca04d7c156391ae044226e8913427ac3dc071a9877baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a12044607f6934bfc0ca04d7c156391ae044226e8913427ac3dc071a9877baf", kill_on_drop: false }`
[INFO] [stdout] 2a12044607f6934bfc0ca04d7c156391ae044226e8913427ac3dc071a9877baf