[INFO] fetching crate macos-profiler 0.2.1...
[INFO] building macos-profiler-0.2.1 against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] extracting crate macos-profiler 0.2.1 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate macos-profiler 0.2.1 on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "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-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4890fb5f5f7de9ac8af1111b7906806e13353fb8a8fb17b434d235b38555890
[INFO] running `Command { std: "docker" "start" "-a" "a4890fb5f5f7de9ac8af1111b7906806e13353fb8a8fb17b434d235b38555890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4890fb5f5f7de9ac8af1111b7906806e13353fb8a8fb17b434d235b38555890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4890fb5f5f7de9ac8af1111b7906806e13353fb8a8fb17b434d235b38555890", kill_on_drop: false }`
[INFO] [stdout] a4890fb5f5f7de9ac8af1111b7906806e13353fb8a8fb17b434d235b38555890
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3826a0c1eb52f0638c4cf8834812ce1eceeb88bfe1fd17e16dc9eb32b5c6a5d3
[INFO] running `Command { std: "docker" "start" "-a" "3826a0c1eb52f0638c4cf8834812ce1eceeb88bfe1fd17e16dc9eb32b5c6a5d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.5.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling command-macros v0.1.11
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling object v0.28.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling nix v0.24.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling rayon v0.9.0
[INFO] [stderr]    Compiling ctrlc v3.2.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling failure v0.1.8
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[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] 
[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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.00s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3826a0c1eb52f0638c4cf8834812ce1eceeb88bfe1fd17e16dc9eb32b5c6a5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3826a0c1eb52f0638c4cf8834812ce1eceeb88bfe1fd17e16dc9eb32b5c6a5d3", kill_on_drop: false }`
[INFO] [stdout] 3826a0c1eb52f0638c4cf8834812ce1eceeb88bfe1fd17e16dc9eb32b5c6a5d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91f31be5a4f3315b80842e1c53da5fd4e913f6c45967d56d21e888bdfbe91a97
[INFO] running `Command { std: "docker" "start" "-a" "91f31be5a4f3315b80842e1c53da5fd4e913f6c45967d56d21e888bdfbe91a97", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: use `.truncate()` if you don't need the other half
[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] 
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.53s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/macos_profiler-0875e1d1f00197de)
[INFO] running `Command { std: "docker" "inspect" "91f31be5a4f3315b80842e1c53da5fd4e913f6c45967d56d21e888bdfbe91a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f31be5a4f3315b80842e1c53da5fd4e913f6c45967d56d21e888bdfbe91a97", kill_on_drop: false }`
[INFO] [stdout] 91f31be5a4f3315b80842e1c53da5fd4e913f6c45967d56d21e888bdfbe91a97