[INFO] fetching crate unix_exec_piper 0.1.4...
[INFO] testing unix_exec_piper-0.1.4 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate unix_exec_piper 0.1.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate unix_exec_piper 0.1.4 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unix_exec_piper 0.1.4
[INFO] finished tweaking crates.io crate unix_exec_piper 0.1.4
[INFO] tweaked toml for crates.io crate unix_exec_piper 0.1.4 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate unix_exec_piper 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded errno-dragonfly v0.1.1
[INFO] [stderr]   Downloaded errno v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc1c18a8516f53ee7da6657df6f10f7d4f51b94bf7b14f5eed9fe31dad7687b5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc1c18a8516f53ee7da6657df6f10f7d4f51b94bf7b14f5eed9fe31dad7687b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc1c18a8516f53ee7da6657df6f10f7d4f51b94bf7b14f5eed9fe31dad7687b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc1c18a8516f53ee7da6657df6f10f7d4f51b94bf7b14f5eed9fe31dad7687b5", kill_on_drop: false }`
[INFO] [stdout] fc1c18a8516f53ee7da6657df6f10f7d4f51b94bf7b14f5eed9fe31dad7687b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5a75d5d0852cbdfa7cad02bece903a949e395e7f47955151b23d3ad07e56b08c
[INFO] running `Command { std: "docker" "start" "-a" "5a75d5d0852cbdfa7cad02bece903a949e395e7f47955151b23d3ad07e56b08c", kill_on_drop: false }`
[INFO] [stderr]    Compiling errno v0.2.6
[INFO] [stderr]    Compiling unix_exec_piper v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stdout]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:144:46
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stdout]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "5a75d5d0852cbdfa7cad02bece903a949e395e7f47955151b23d3ad07e56b08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a75d5d0852cbdfa7cad02bece903a949e395e7f47955151b23d3ad07e56b08c", kill_on_drop: false }`
[INFO] [stdout] 5a75d5d0852cbdfa7cad02bece903a949e395e7f47955151b23d3ad07e56b08c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebff2ef2d0e543eaa87e44eba9b2ed193070aac19d875186ed125f9390f04dac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ebff2ef2d0e543eaa87e44eba9b2ed193070aac19d875186ed125f9390f04dac", kill_on_drop: false }`
[INFO] [stderr]    Compiling unix_exec_piper v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stdout]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:144:46
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stdout]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/libc_util.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let input = String::from("Hello World!");
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stdout]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:144:46
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stdout]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "ebff2ef2d0e543eaa87e44eba9b2ed193070aac19d875186ed125f9390f04dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebff2ef2d0e543eaa87e44eba9b2ed193070aac19d875186ed125f9390f04dac", kill_on_drop: false }`
[INFO] [stdout] ebff2ef2d0e543eaa87e44eba9b2ed193070aac19d875186ed125f9390f04dac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e6d70d9a0a0395835075a3f47389b7cf758c05f7e12e4923ffd453bba45afb8a
[INFO] running `Command { std: "docker" "start" "-a" "e6d70d9a0a0395835075a3f47389b7cf758c05f7e12e4923ffd453bba45afb8a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stdout] running 3 tests
[INFO] [stderr]    --> src/lib.rs:132:41
[INFO] [stdout] test libc_util::tests::test_construct_libc_cstring_arr ... ok
[INFO] [stderr]     |
[INFO] [stdout] test libc_util::tests::test_construct_libc_cstring ... ok
[INFO] [stderr] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stderr]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:144:46
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stderr]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/libc_util.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let input = String::from("Hello World!");
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:132:41
[INFO] [stderr]     |
[INFO] [stderr] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stderr]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:144:46
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stderr]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/unix_exec_piper-9a287543828555cf)
[INFO] [stdout] 2
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/example-6f1baba60d3e4583)
[INFO] [stdout] test tests::test_execute_chain ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests unix_exec_piper
[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 1 test
[INFO] [stdout] test src/pipe.rs - pipe::PipeEnd (line 35) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e6d70d9a0a0395835075a3f47389b7cf758c05f7e12e4923ffd453bba45afb8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d70d9a0a0395835075a3f47389b7cf758c05f7e12e4923ffd453bba45afb8a", kill_on_drop: false }`
[INFO] [stdout] e6d70d9a0a0395835075a3f47389b7cf758c05f7e12e4923ffd453bba45afb8a