[INFO] fetching crate thread-monitor 0.1.1...
[INFO] testing thread-monitor-0.1.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate thread-monitor 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate thread-monitor 0.1.1
[INFO] finished tweaking crates.io crate thread-monitor 0.1.1
[INFO] tweaked toml for crates.io crate thread-monitor 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate thread-monitor 0.1.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 920d4ef826f00c8dd495e22dc7227c7ae1e510ea050b3a3762a85c8b0a9e0311
[INFO] running `Command { std: "docker" "start" "-a" "920d4ef826f00c8dd495e22dc7227c7ae1e510ea050b3a3762a85c8b0a9e0311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "920d4ef826f00c8dd495e22dc7227c7ae1e510ea050b3a3762a85c8b0a9e0311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "920d4ef826f00c8dd495e22dc7227c7ae1e510ea050b3a3762a85c8b0a9e0311", kill_on_drop: false }`
[INFO] [stdout] 920d4ef826f00c8dd495e22dc7227c7ae1e510ea050b3a3762a85c8b0a9e0311
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f99d6ddf43d2f875c33107e9875b96c0b308d41e236d78c02a5c6e63d1d6aefa
[INFO] running `Command { std: "docker" "start" "-a" "f99d6ddf43d2f875c33107e9875b96c0b308d41e236d78c02a5c6e63d1d6aefa", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-conv v0.2.1
[INFO] [stderr]    Compiling transmitter v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling thread-monitor v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `thr_started` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:143:37
[INFO] [stdout]     |
[INFO] [stdout] 143 | ...                   thr_started += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_started` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   thr_started += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_finished` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:155:37
[INFO] [stdout]     |
[INFO] [stdout] 155 | ...                   thr_finished += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `Command { std: "docker" "inspect" "f99d6ddf43d2f875c33107e9875b96c0b308d41e236d78c02a5c6e63d1d6aefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f99d6ddf43d2f875c33107e9875b96c0b308d41e236d78c02a5c6e63d1d6aefa", kill_on_drop: false }`
[INFO] [stdout] f99d6ddf43d2f875c33107e9875b96c0b308d41e236d78c02a5c6e63d1d6aefa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11c0fa7de6ab1e9c0081452f571daa99abb9bd3cdaba20099c95778d9eb123b0
[INFO] running `Command { std: "docker" "start" "-a" "11c0fa7de6ab1e9c0081452f571daa99abb9bd3cdaba20099c95778d9eb123b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling thread-monitor v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `thr_started` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:143:37
[INFO] [stdout]     |
[INFO] [stdout] 143 | ...                   thr_started += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_started` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   thr_started += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_finished` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:155:37
[INFO] [stdout]     |
[INFO] [stdout] 155 | ...                   thr_finished += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_started` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:143:37
[INFO] [stdout]     |
[INFO] [stdout] 143 | ...                   thr_started += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_started` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   thr_started += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thr_finished` is never read
[INFO] [stdout]    --> src/monitor/stat_profiler.rs:155:37
[INFO] [stdout]     |
[INFO] [stdout] 155 | ...                   thr_finished += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "11c0fa7de6ab1e9c0081452f571daa99abb9bd3cdaba20099c95778d9eb123b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11c0fa7de6ab1e9c0081452f571daa99abb9bd3cdaba20099c95778d9eb123b0", kill_on_drop: false }`
[INFO] [stdout] 11c0fa7de6ab1e9c0081452f571daa99abb9bd3cdaba20099c95778d9eb123b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9325ab14305ba7a4d18df1b8b6b779f4f6caea47747f3d1002aaf304e4577687
[INFO] running `Command { std: "docker" "start" "-a" "9325ab14305ba7a4d18df1b8b6b779f4f6caea47747f3d1002aaf304e4577687", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `thr_started` is never read
[INFO] [stderr]    --> src/monitor/stat_profiler.rs:143:37
[INFO] [stderr]     |
[INFO] [stderr] 143 | ...                   thr_started += 1;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `thr_started` is never read
[INFO] [stderr]    --> src/monitor/stat_profiler.rs:146:37
[INFO] [stderr]     |
[INFO] [stderr] 146 | ...                   thr_started += 1;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `thr_finished` is never read
[INFO] [stderr]    --> src/monitor/stat_profiler.rs:155:37
[INFO] [stderr]     |
[INFO] [stderr] 155 | ...                   thr_finished += 1;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `thread-monitor` (lib) generated 3 warnings
[INFO] [stderr] warning: `thread-monitor` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/thread_monitor-852fa5303d65fb04)
[INFO] [stderr]    Doc-tests thread_monitor
[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" "9325ab14305ba7a4d18df1b8b6b779f4f6caea47747f3d1002aaf304e4577687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9325ab14305ba7a4d18df1b8b6b779f4f6caea47747f3d1002aaf304e4577687", kill_on_drop: false }`
[INFO] [stdout] 9325ab14305ba7a4d18df1b8b6b779f4f6caea47747f3d1002aaf304e4577687