[INFO] cloning repository https://github.com/tkkcc/thread_panic_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tkkcc/thread_panic_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkkcc%2Fthread_panic_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkkcc%2Fthread_panic_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e30b94ecb4568fa2a3a056768a69ee0dc195fdf
[INFO] testing tkkcc/thread_panic_test against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkkcc%2Fthread_panic_test" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tkkcc/thread_panic_test
[INFO] finished tweaking git repo https://github.com/tkkcc/thread_panic_test
[INFO] tweaked toml for git repo https://github.com/tkkcc/thread_panic_test written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tkkcc/thread_panic_test on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tkkcc/thread_panic_test 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57daf67ec785f114ee795be97d9cd909940d2ff264a52c25dfc3a99f57fb8ac2
[INFO] running `Command { std: "docker" "start" "-a" "57daf67ec785f114ee795be97d9cd909940d2ff264a52c25dfc3a99f57fb8ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57daf67ec785f114ee795be97d9cd909940d2ff264a52c25dfc3a99f57fb8ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57daf67ec785f114ee795be97d9cd909940d2ff264a52c25dfc3a99f57fb8ac2", kill_on_drop: false }`
[INFO] [stdout] 57daf67ec785f114ee795be97d9cd909940d2ff264a52c25dfc3a99f57fb8ac2
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15d038c0b0005484f770441ae7537d3a824e64b612a246933169e1cce8fd79a8
[INFO] running `Command { std: "docker" "start" "-a" "15d038c0b0005484f770441ae7537d3a824e64b612a246933169e1cce8fd79a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling thread_panic_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | /     thread::spawn(|| {
[INFO] [stdout]  5 | |         thread::spawn(|| {
[INFO] [stdout]  6 | |             thread::spawn(|| loop {
[INFO] [stdout]  7 | |                 thread::sleep(Duration::from_secs(1));
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |     })
[INFO] [stdout] 16 | |     .join();
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout]  4 |     let _ = thread::spawn(|| {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout]  5 | /         thread::spawn(|| {
[INFO] [stdout]  6 | |             thread::spawn(|| loop {
[INFO] [stdout]  7 | |                 thread::sleep(Duration::from_secs(1));
[INFO] [stdout]  8 | |                 println!("5")
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |         })
[INFO] [stdout] 13 | |         .join();
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout]  5 |         let _ = thread::spawn(|| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "15d038c0b0005484f770441ae7537d3a824e64b612a246933169e1cce8fd79a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15d038c0b0005484f770441ae7537d3a824e64b612a246933169e1cce8fd79a8", kill_on_drop: false }`
[INFO] [stdout] 15d038c0b0005484f770441ae7537d3a824e64b612a246933169e1cce8fd79a8
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71ceb182fbebd6bb6fb2329b7d144161776f0aa48a24bc2cea3a3ae40dded49c
[INFO] running `Command { std: "docker" "start" "-a" "71ceb182fbebd6bb6fb2329b7d144161776f0aa48a24bc2cea3a3ae40dded49c", kill_on_drop: false }`
[INFO] [stderr]    Compiling thread_panic_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | /     thread::spawn(|| {
[INFO] [stdout]  5 | |         thread::spawn(|| {
[INFO] [stdout]  6 | |             thread::spawn(|| loop {
[INFO] [stdout]  7 | |                 thread::sleep(Duration::from_secs(1));
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |     })
[INFO] [stdout] 16 | |     .join();
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout]  4 |     let _ = thread::spawn(|| {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout]  5 | /         thread::spawn(|| {
[INFO] [stdout]  6 | |             thread::spawn(|| loop {
[INFO] [stdout]  7 | |                 thread::sleep(Duration::from_secs(1));
[INFO] [stdout]  8 | |                 println!("5")
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |         })
[INFO] [stdout] 13 | |         .join();
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout]  5 |         let _ = thread::spawn(|| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "71ceb182fbebd6bb6fb2329b7d144161776f0aa48a24bc2cea3a3ae40dded49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ceb182fbebd6bb6fb2329b7d144161776f0aa48a24bc2cea3a3ae40dded49c", kill_on_drop: false }`
[INFO] [stdout] 71ceb182fbebd6bb6fb2329b7d144161776f0aa48a24bc2cea3a3ae40dded49c
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 80e4314d464700172ae115a4a91485700856aed3c4424586e41e9a21dd228a61
[INFO] running `Command { std: "docker" "start" "-a" "80e4314d464700172ae115a4a91485700856aed3c4424586e41e9a21dd228a61", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:4:5
[INFO] [stderr]    |
[INFO] [stderr]  4 | /     thread::spawn(|| {
[INFO] [stderr]  5 | |         thread::spawn(|| {
[INFO] [stderr]  6 | |             thread::spawn(|| loop {
[INFO] [stderr]  7 | |                 thread::sleep(Duration::from_secs(1));
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     })
[INFO] [stderr] 16 | |     .join();
[INFO] [stderr]    | |___________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr]  4 |     let _ = thread::spawn(|| {
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:5:9
[INFO] [stderr]    |
[INFO] [stderr]  5 | /         thread::spawn(|| {
[INFO] [stderr]  6 | |             thread::spawn(|| loop {
[INFO] [stderr]  7 | |                 thread::sleep(Duration::from_secs(1));
[INFO] [stderr]  8 | |                 println!("5")
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |         })
[INFO] [stderr] 13 | |         .join();
[INFO] [stderr]    | |_______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr]  5 |         let _ = thread::spawn(|| {
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `thread_panic_test` (bin "thread_panic_test" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/thread_panic_test-f87994cae14ff988)
[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" "80e4314d464700172ae115a4a91485700856aed3c4424586e41e9a21dd228a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e4314d464700172ae115a4a91485700856aed3c4424586e41e9a21dd228a61", kill_on_drop: false }`
[INFO] [stdout] 80e4314d464700172ae115a4a91485700856aed3c4424586e41e9a21dd228a61