[INFO] fetching crate waitgroup 0.1.2...
[INFO] testing waitgroup-0.1.2 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate waitgroup 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate waitgroup 0.1.2
[INFO] finished tweaking crates.io crate waitgroup 0.1.2
[INFO] tweaked toml for crates.io crate waitgroup 0.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate waitgroup 0.1.2 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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] [stderr]      Locking 58 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6497c17a8c662f5dfecd34cd18af2e34a235533b19c0a0429d6981efa9888394
[INFO] running `Command { std: "docker" "start" "-a" "6497c17a8c662f5dfecd34cd18af2e34a235533b19c0a0429d6981efa9888394", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6497c17a8c662f5dfecd34cd18af2e34a235533b19c0a0429d6981efa9888394", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6497c17a8c662f5dfecd34cd18af2e34a235533b19c0a0429d6981efa9888394", kill_on_drop: false }`
[INFO] [stdout] 6497c17a8c662f5dfecd34cd18af2e34a235533b19c0a0429d6981efa9888394
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c8ee2ed49d1c22487e7b84f306e3bb85da81907721dc7f018c4ba44d8d8a0cc
[INFO] running `Command { std: "docker" "start" "-a" "2c8ee2ed49d1c22487e7b84f306e3bb85da81907721dc7f018c4ba44d8d8a0cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling waitgroup v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 36 |     inner: Arc<Inner>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worker` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[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 0.15s
[INFO] running `Command { std: "docker" "inspect" "2c8ee2ed49d1c22487e7b84f306e3bb85da81907721dc7f018c4ba44d8d8a0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c8ee2ed49d1c22487e7b84f306e3bb85da81907721dc7f018c4ba44d8d8a0cc", kill_on_drop: false }`
[INFO] [stdout] 2c8ee2ed49d1c22487e7b84f306e3bb85da81907721dc7f018c4ba44d8d8a0cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcec1b5c315cfbe22391520a0b2677c6c7fda933de3bf5a9199de30041c91d95
[INFO] running `Command { std: "docker" "start" "-a" "dcec1b5c315cfbe22391520a0b2677c6c7fda933de3bf5a9199de30041c91d95", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling piper v0.2.4
[INFO] [stderr]    Compiling value-bag v1.11.1
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 36 |     inner: Arc<Inner>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worker` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling async-lock v3.4.1
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling async-executor v1.13.3
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-std v1.13.2
[INFO] [stderr]    Compiling waitgroup v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 36 |     inner: Arc<Inner>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Worker` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[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 9.24s
[INFO] running `Command { std: "docker" "inspect" "dcec1b5c315cfbe22391520a0b2677c6c7fda933de3bf5a9199de30041c91d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcec1b5c315cfbe22391520a0b2677c6c7fda933de3bf5a9199de30041c91d95", kill_on_drop: false }`
[INFO] [stdout] dcec1b5c315cfbe22391520a0b2677c6c7fda933de3bf5a9199de30041c91d95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3d4209e01564b081495a16cc595157415e9a8d6d58666c24ff0cbcb96cf09870
[INFO] running `Command { std: "docker" "start" "-a" "3d4209e01564b081495a16cc595157415e9a8d6d58666c24ff0cbcb96cf09870", kill_on_drop: false }`
[INFO] [stderr] warning: field `inner` is never read
[INFO] [stderr]   --> src/lib.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub struct Worker {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] 36 |     inner: Arc<Inner>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Worker` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `waitgroup` (lib) generated 1 warning
[INFO] [stderr] warning: `waitgroup` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/waitgroup-c37f4a5f6f5b5412)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::smoke ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests waitgroup
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3d4209e01564b081495a16cc595157415e9a8d6d58666c24ff0cbcb96cf09870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d4209e01564b081495a16cc595157415e9a8d6d58666c24ff0cbcb96cf09870", kill_on_drop: false }`
[INFO] [stdout] 3d4209e01564b081495a16cc595157415e9a8d6d58666c24ff0cbcb96cf09870