[INFO] fetching crate macos-profiler 0.2.1...
[INFO] testing macos-profiler-0.2.1 against master#d3515155216e98c23440ea92c3f49c6a0d7101fc for pr-113843
[INFO] extracting crate macos-profiler 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate macos-profiler 0.2.1 on toolchain d3515155216e98c23440ea92c3f49c6a0d7101fc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate macos-profiler 0.2.1
[INFO] finished tweaking crates.io crate macos-profiler 0.2.1
[INFO] tweaked toml for crates.io crate macos-profiler 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quicli v0.2.0
[INFO] [stderr]   Downloaded rayon v0.9.0
[INFO] [stderr]   Downloaded command-macros v0.1.11
[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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 257b8cf300199e24d244040c1ae320ee65c2c42381cd4ca88db8d5a54b12a250
[INFO] running `Command { std: "docker" "start" "-a" "257b8cf300199e24d244040c1ae320ee65c2c42381cd4ca88db8d5a54b12a250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "257b8cf300199e24d244040c1ae320ee65c2c42381cd4ca88db8d5a54b12a250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "257b8cf300199e24d244040c1ae320ee65c2c42381cd4ca88db8d5a54b12a250", kill_on_drop: false }`
[INFO] [stdout] 257b8cf300199e24d244040c1ae320ee65c2c42381cd4ca88db8d5a54b12a250
[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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b47febc3d6db0af3f2a7c4f6129e324abe109a1b7cf900202b5d7dd054bdf676
[INFO] running `Command { std: "docker" "start" "-a" "b47febc3d6db0af3f2a7c4f6129e324abe109a1b7cf900202b5d7dd054bdf676", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling backtrace v0.3.68
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.27.3
[INFO] [stderr]    Compiling regex-syntax v0.7.4
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling command-macros v0.1.11
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling aho-corasick v1.0.2
[INFO] [stderr]    Compiling object v0.31.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling log v0.4.19
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling ucd-util v0.1.10
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling serde_derive v1.0.171
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling nix v0.26.2
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling regex-automata v0.3.3
[INFO] [stderr]    Compiling addr2line v0.20.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling rayon v0.9.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling ctrlc v3.4.0
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_json v1.0.103
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling regex v1.9.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quicli v0.2.0
[INFO] [stderr]    Compiling macos-profiler v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]   --> src/dtrace.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 | ...                   self.buffer.split_off(0);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 33 |                             let _ = self.buffer.split_off(0);
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]   --> src/dtrace.rs:39:21
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     self.buffer.split_off(0);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     let _ = self.buffer.split_off(0);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]   --> src/dtrace.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 self.buffer.split_off(0);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 let _ = self.buffer.split_off(0);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.21s
[INFO] running `Command { std: "docker" "inspect" "b47febc3d6db0af3f2a7c4f6129e324abe109a1b7cf900202b5d7dd054bdf676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b47febc3d6db0af3f2a7c4f6129e324abe109a1b7cf900202b5d7dd054bdf676", kill_on_drop: false }`
[INFO] [stdout] b47febc3d6db0af3f2a7c4f6129e324abe109a1b7cf900202b5d7dd054bdf676
[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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73d1fb7eac1ccaa12db006a66826d0d798d93ed3894381d5276628fce76ceb71
[INFO] running `Command { std: "docker" "start" "-a" "73d1fb7eac1ccaa12db006a66826d0d798d93ed3894381d5276628fce76ceb71", kill_on_drop: false }`
[INFO] [stderr]    Compiling macos-profiler v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]   --> src/dtrace.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 | ...                   self.buffer.split_off(0);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 33 |                             let _ = self.buffer.split_off(0);
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]   --> src/dtrace.rs:39:21
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     self.buffer.split_off(0);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     let _ = self.buffer.split_off(0);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]   --> src/dtrace.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 self.buffer.split_off(0);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 let _ = self.buffer.split_off(0);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "73d1fb7eac1ccaa12db006a66826d0d798d93ed3894381d5276628fce76ceb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73d1fb7eac1ccaa12db006a66826d0d798d93ed3894381d5276628fce76ceb71", kill_on_drop: false }`
[INFO] [stdout] 73d1fb7eac1ccaa12db006a66826d0d798d93ed3894381d5276628fce76ceb71
[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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+d3515155216e98c23440ea92c3f49c6a0d7101fc" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e84feedc9db85eec906d8c3b499c4c1d5b6d7c1203f984f06fb0e7a8b06b576
[INFO] running `Command { std: "docker" "start" "-a" "5e84feedc9db85eec906d8c3b499c4c1d5b6d7c1203f984f06fb0e7a8b06b576", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]   --> src/dtrace.rs:33:29
[INFO] [stderr]    |
[INFO] [stderr] 33 | ...                   self.buffer.split_off(0);
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 33 |                             let _ = self.buffer.split_off(0);
[INFO] [stderr]    |                             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]   --> src/dtrace.rs:39:21
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     self.buffer.split_off(0);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     let _ = self.buffer.split_off(0);
[INFO] [stderr]    |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]   --> src/dtrace.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 self.buffer.split_off(0);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 let _ = self.buffer.split_off(0);
[INFO] [stderr]    |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `macos-profiler` (bin "macos-profiler" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/macos_profiler-6c264911f9162ae3)
[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" "5e84feedc9db85eec906d8c3b499c4c1d5b6d7c1203f984f06fb0e7a8b06b576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e84feedc9db85eec906d8c3b499c4c1d5b6d7c1203f984f06fb0e7a8b06b576", kill_on_drop: false }`
[INFO] [stdout] 5e84feedc9db85eec906d8c3b499c4c1d5b6d7c1203f984f06fb0e7a8b06b576