[INFO] fetching crate unshare 0.7.0...
[INFO] testing unshare-0.7.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate unshare 0.7.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate unshare 0.7.0
[INFO] finished tweaking crates.io crate unshare 0.7.0
[INFO] tweaked toml for crates.io crate unshare 0.7.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unshare 0.7.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unshare 0.7.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.6.2
[INFO] [stderr]   Downloaded getrandom v0.2.2
[INFO] [stderr]   Downloaded rand_hc v0.3.0
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded rand_chacha v0.3.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.10
[INFO] [stderr]   Downloaded argparse v0.2.2
[INFO] [stderr]   Downloaded rand v0.8.3
[INFO] [stderr]   Downloaded cc v1.0.67
[INFO] [stderr]   Downloaded nix v0.20.0
[INFO] [stderr]   Downloaded libc v0.2.94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e97cdceef582975960daa289c6760b2dd76f99ac3df4dbb21fe8b29fc6c8a864
[INFO] running `Command { std: "docker" "start" "-a" "e97cdceef582975960daa289c6760b2dd76f99ac3df4dbb21fe8b29fc6c8a864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e97cdceef582975960daa289c6760b2dd76f99ac3df4dbb21fe8b29fc6c8a864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e97cdceef582975960daa289c6760b2dd76f99ac3df4dbb21fe8b29fc6c8a864", kill_on_drop: false }`
[INFO] [stdout] e97cdceef582975960daa289c6760b2dd76f99ac3df4dbb21fe8b29fc6c8a864
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8024c97f59f247771f77b52278b9dae6e0aa21ad534cb97e891b8bd71a962977
[INFO] running `Command { std: "docker" "start" "-a" "8024c97f59f247771f77b52278b9dae6e0aa21ad534cb97e891b8bd71a962977", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling unshare v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/error.rs:93:28
[INFO] [stdout]    |
[INFO] [stdout] 93 |     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stdout]    |                            ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 93 -     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stdout] 93 +     BeforeUnfreeze(Box<dyn ::std::error::Error  + Send + Sync + 'static>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/child.rs:294:5
[INFO] [stdout]     |
[INFO] [stdout] 294 |     extern {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 | type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stdout]    |                         ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 - type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stdout] 75 + type BoxError = Box<dyn ::std::error::Error + Send + Sync + 'static>;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fd_lookup` is never read
[INFO] [stdout]   --> src/run.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ChildInfo<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fd_lookup: &'a HashMap<RawFd, RawFd>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.24s
[INFO] running `Command { std: "docker" "inspect" "8024c97f59f247771f77b52278b9dae6e0aa21ad534cb97e891b8bd71a962977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8024c97f59f247771f77b52278b9dae6e0aa21ad534cb97e891b8bd71a962977", kill_on_drop: false }`
[INFO] [stdout] 8024c97f59f247771f77b52278b9dae6e0aa21ad534cb97e891b8bd71a962977
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 623a9ffdbb51c39d43e055647fc63cced082690f14e8ba57fce4b93d839080a7
[INFO] running `Command { std: "docker" "start" "-a" "623a9ffdbb51c39d43e055647fc63cced082690f14e8ba57fce4b93d839080a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/error.rs:93:28
[INFO] [stdout]    |
[INFO] [stdout] 93 |     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stdout]    |                            ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 93 -     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stdout] 93 +     BeforeUnfreeze(Box<dyn ::std::error::Error  + Send + Sync + 'static>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/child.rs:294:5
[INFO] [stdout]     |
[INFO] [stdout] 294 |     extern {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 | type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stdout]    |                         ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 - type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stdout] 75 + type BoxError = Box<dyn ::std::error::Error + Send + Sync + 'static>;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fd_lookup` is never read
[INFO] [stdout]   --> src/run.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ChildInfo<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fd_lookup: &'a HashMap<RawFd, RawFd>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling unshare v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/error.rs:93:28
[INFO] [stdout]    |
[INFO] [stdout] 93 |     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stdout]    |                            ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 93 -     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stdout] 93 +     BeforeUnfreeze(Box<dyn ::std::error::Error  + Send + Sync + 'static>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/child.rs:294:5
[INFO] [stdout]     |
[INFO] [stdout] 294 |     extern {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 | type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stdout]    |                         ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 - type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stdout] 75 + type BoxError = Box<dyn ::std::error::Error + Send + Sync + 'static>;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fd_lookup` is never read
[INFO] [stdout]   --> src/run.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ChildInfo<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fd_lookup: &'a HashMap<RawFd, RawFd>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "623a9ffdbb51c39d43e055647fc63cced082690f14e8ba57fce4b93d839080a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "623a9ffdbb51c39d43e055647fc63cced082690f14e8ba57fce4b93d839080a7", kill_on_drop: false }`
[INFO] [stdout] 623a9ffdbb51c39d43e055647fc63cced082690f14e8ba57fce4b93d839080a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5b4429ba941d939b3472f2707e42a98d2a2a22b4c86f7affa417030e20619d89
[INFO] running `Command { std: "docker" "start" "-a" "5b4429ba941d939b3472f2707e42a98d2a2a22b4c86f7affa417030e20619d89", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/error.rs:93:28
[INFO] [stderr]    |
[INFO] [stderr] 93 |     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stderr]    |                            ^                   ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 93 -     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stderr] 93 +     BeforeUnfreeze(Box<dyn ::std::error::Error  + Send + Sync + 'static>),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]    --> src/child.rs:294:5
[INFO] [stderr]     |
[INFO] [stderr] 294 |     extern {
[INFO] [stderr]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/lib.rs:75:25
[INFO] [stderr]    |
[INFO] [stderr] 75 | type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stderr]    |                         ^                   ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 75 - type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stderr] 75 + type BoxError = Box<dyn ::std::error::Error + Send + Sync + 'static>;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `fd_lookup` is never read
[INFO] [stderr]   --> src/run.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct ChildInfo<'a> {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 49 |     pub fd_lookup: &'a HashMap<RawFd, RawFd>,
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `unshare` (lib) generated 4 warnings (run `cargo fix --lib -p unshare` to apply 3 suggestions)
[INFO] [stderr] warning: `unshare` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unshare-068f227945accb49)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test child::test::test_format ... ok
[INFO] [stdout] test debug::test::test_comprehensive ... ok
[INFO] [stdout] test debug::test::test_debug ... ok
[INFO] [stdout] test debug::test::test_no_env ... ok
[INFO] [stdout] test debug::test::test_pretty ... ok
[INFO] [stdout] test child::test::test_random ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests unshare
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/error.rs:93:28
[INFO] [stderr]    |
[INFO] [stderr] 93 |     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stderr]    |                            ^                   ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 93 -     BeforeUnfreeze(Box<dyn (::std::error::Error) + Send + Sync + 'static>),
[INFO] [stderr] 93 +     BeforeUnfreeze(Box<dyn ::std::error::Error  + Send + Sync + 'static>),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/lib.rs:75:25
[INFO] [stderr]    |
[INFO] [stderr] 75 | type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stderr]    |                         ^                   ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 75 - type BoxError = Box<dyn (::std::error::Error) + Send + Sync + 'static>;
[INFO] [stderr] 75 + type BoxError = Box<dyn ::std::error::Error + Send + Sync + 'static>;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/linux.rs - linux::Command::env_var_with_pid (line 258) ... ignored
[INFO] [stdout] test src/zombies.rs - zombies::child_events (line 142) ... ignored
[INFO] [stdout] test src/zombies.rs - zombies::reap_zombies (line 58) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5b4429ba941d939b3472f2707e42a98d2a2a22b4c86f7affa417030e20619d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b4429ba941d939b3472f2707e42a98d2a2a22b4c86f7affa417030e20619d89", kill_on_drop: false }`
[INFO] [stdout] 5b4429ba941d939b3472f2707e42a98d2a2a22b4c86f7affa417030e20619d89
