[INFO] fetching crate instance-copy-on-write 0.2.2...
[INFO] testing instance-copy-on-write-0.2.2 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate instance-copy-on-write 0.2.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate instance-copy-on-write 0.2.2
[INFO] finished tweaking crates.io crate instance-copy-on-write 0.2.2
[INFO] tweaked toml for crates.io crate instance-copy-on-write 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate instance-copy-on-write 0.2.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate instance-copy-on-write 0.2.2 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6931165e24ea39833c6e5c8a2ea0538eebfd0249d17fd3e644e64cb33bed104f
[INFO] running `Command { std: "docker" "start" "-a" "6931165e24ea39833c6e5c8a2ea0538eebfd0249d17fd3e644e64cb33bed104f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6931165e24ea39833c6e5c8a2ea0538eebfd0249d17fd3e644e64cb33bed104f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6931165e24ea39833c6e5c8a2ea0538eebfd0249d17fd3e644e64cb33bed104f", kill_on_drop: false }`
[INFO] [stdout] 6931165e24ea39833c6e5c8a2ea0538eebfd0249d17fd3e644e64cb33bed104f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d8e4e3f46cfa82dac39f093871b1b1bcb08ce31b792bd43857a725632eb9f7d
[INFO] running `Command { std: "docker" "start" "-a" "9d8e4e3f46cfa82dac39f093871b1b1bcb08ce31b792bd43857a725632eb9f7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling instance-copy-on-write v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crossbeam_utils::Backoff`
[INFO] [stdout]   --> src/cow_mutex.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crossbeam_utils::Backoff;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bind` is never read
[INFO] [stdout]   --> src/cow_mutex.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     bind: &'read ICoW<ITEM>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ICoWRead` has a derived impl for the trait `Debug`, 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] [stdout] warning: field `inst` is never read
[INFO] [stdout]    --> src/cow_mutex.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     inst: &'lock ICoW<ITEM>
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ICoWLock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "9d8e4e3f46cfa82dac39f093871b1b1bcb08ce31b792bd43857a725632eb9f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d8e4e3f46cfa82dac39f093871b1b1bcb08ce31b792bd43857a725632eb9f7d", kill_on_drop: false }`
[INFO] [stdout] 9d8e4e3f46cfa82dac39f093871b1b1bcb08ce31b792bd43857a725632eb9f7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0e46c436c59abb1c6f05aba6c5f086d1d815b7cc8a4af793a962c397ab6b879
[INFO] running `Command { std: "docker" "start" "-a" "a0e46c436c59abb1c6f05aba6c5f086d1d815b7cc8a4af793a962c397ab6b879", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `crossbeam_utils::Backoff`
[INFO] [stdout]   --> src/cow_mutex.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crossbeam_utils::Backoff;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bind` is never read
[INFO] [stdout]   --> src/cow_mutex.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     bind: &'read ICoW<ITEM>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ICoWRead` has a derived impl for the trait `Debug`, 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] [stdout] warning: field `inst` is never read
[INFO] [stdout]    --> src/cow_mutex.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     inst: &'lock ICoW<ITEM>
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ICoWLock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling instance-copy-on-write v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crossbeam_utils::Backoff`
[INFO] [stdout]   --> src/cow_mutex.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crossbeam_utils::Backoff;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/cow_mutex.rs:704:34
[INFO] [stdout]     |
[INFO] [stdout] 704 |         struct Test { s: String };
[INFO] [stdout]     |                                  ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/cow_mutex.rs:725:34
[INFO] [stdout]     |
[INFO] [stdout] 725 |         struct Test { s: String };
[INFO] [stdout]     |                                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read0`
[INFO] [stdout]    --> src/cow_mutex.rs:712:17
[INFO] [stdout]     |
[INFO] [stdout] 712 |             let read0 = icow.read();
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_read0`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read1`
[INFO] [stdout]    --> src/cow_mutex.rs:757:13
[INFO] [stdout]     |
[INFO] [stdout] 757 |         let read1 = icow.read();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_read1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read0`
[INFO] [stdout]    --> src/cow_mutex.rs:851:13
[INFO] [stdout]     |
[INFO] [stdout] 851 |         let read0 = icow.read();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_read0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read2`
[INFO] [stdout]    --> src/cow_mutex.rs:852:13
[INFO] [stdout]     |
[INFO] [stdout] 852 |         let read2 = icow.read();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_read2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read0`
[INFO] [stdout]    --> src/cow_mutex.rs:996:17
[INFO] [stdout]     |
[INFO] [stdout] 996 |             let read0 = icow.read();
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_read0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read2`
[INFO] [stdout]    --> src/cow_mutex.rs:997:17
[INFO] [stdout]     |
[INFO] [stdout] 997 |             let read2 = icow.read();
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_read2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bind` is never read
[INFO] [stdout]   --> src/cow_mutex.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     bind: &'read ICoW<ITEM>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ICoWRead` has a derived impl for the trait `Debug`, 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] [stdout] warning: field `inst` is never read
[INFO] [stdout]    --> src/cow_mutex.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     inst: &'lock ICoW<ITEM>
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ICoWLock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `s` is never read
[INFO] [stdout]    --> src/cow_mutex.rs:704:23
[INFO] [stdout]     |
[INFO] [stdout] 704 |         struct Test { s: String };
[INFO] [stdout]     |                ----   ^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Test` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `s` is never read
[INFO] [stdout]    --> src/cow_mutex.rs:725:23
[INFO] [stdout]     |
[INFO] [stdout] 725 |         struct Test { s: String };
[INFO] [stdout]     |                ----   ^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Test` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "a0e46c436c59abb1c6f05aba6c5f086d1d815b7cc8a4af793a962c397ab6b879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0e46c436c59abb1c6f05aba6c5f086d1d815b7cc8a4af793a962c397ab6b879", kill_on_drop: false }`
[INFO] [stdout] a0e46c436c59abb1c6f05aba6c5f086d1d815b7cc8a4af793a962c397ab6b879
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 020c79c239b4cf3e8a4f8605e2aac918d66a4b7d2fc6270bf052d67c67c9c5df
[INFO] running `Command { std: "docker" "start" "-a" "020c79c239b4cf3e8a4f8605e2aac918d66a4b7d2fc6270bf052d67c67c9c5df", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crossbeam_utils::Backoff`
[INFO] [stderr]   --> src/cow_mutex.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use crossbeam_utils::Backoff;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `bind` is never read
[INFO] [stderr]   --> src/cow_mutex.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 34 |     bind: &'read ICoW<ITEM>
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `ICoWRead` has a derived impl for the trait `Debug`, 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: field `inst` is never read
[INFO] [stderr]    --> src/cow_mutex.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stderr]     |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 164 |     inst: &'lock ICoW<ITEM>
[INFO] [stderr]     |     ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ICoWLock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `instance-copy-on-write` (lib) generated 3 warnings (run `cargo fix --lib -p instance-copy-on-write` to apply 1 suggestion)
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/cow_mutex.rs:704:34
[INFO] [stderr]     |
[INFO] [stderr] 704 |         struct Test { s: String };
[INFO] [stderr]     |                                  ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/cow_mutex.rs:725:34
[INFO] [stderr]     |
[INFO] [stderr] 725 |         struct Test { s: String };
[INFO] [stderr]     |                                  ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read0`
[INFO] [stderr]    --> src/cow_mutex.rs:712:17
[INFO] [stderr]     |
[INFO] [stderr] 712 |             let read0 = icow.read();
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_read0`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read1`
[INFO] [stderr]    --> src/cow_mutex.rs:757:13
[INFO] [stderr]     |
[INFO] [stderr] 757 |         let read1 = icow.read();
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_read1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read0`
[INFO] [stderr]    --> src/cow_mutex.rs:851:13
[INFO] [stderr]     |
[INFO] [stderr] 851 |         let read0 = icow.read();
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_read0`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read2`
[INFO] [stderr]    --> src/cow_mutex.rs:852:13
[INFO] [stderr]     |
[INFO] [stderr] 852 |         let read2 = icow.read();
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_read2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read0`
[INFO] [stderr]    --> src/cow_mutex.rs:996:17
[INFO] [stderr]     |
[INFO] [stderr] 996 |             let read0 = icow.read();
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_read0`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read2`
[INFO] [stderr]    --> src/cow_mutex.rs:997:17
[INFO] [stderr]     |
[INFO] [stderr] 997 |             let read2 = icow.read();
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_read2`
[INFO] [stderr] 
[INFO] [stderr] warning: field `s` is never read
[INFO] [stderr]    --> src/cow_mutex.rs:704:23
[INFO] [stderr]     |
[INFO] [stderr] 704 |         struct Test { s: String };
[INFO] [stderr]     |                ----   ^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Test` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `s` is never read
[INFO] [stderr]    --> src/cow_mutex.rs:725:23
[INFO] [stderr]     |
[INFO] [stderr] 725 |         struct Test { s: String };
[INFO] [stderr]     |                ----   ^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Test` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `instance-copy-on-write` (lib test) generated 13 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/instance_copy_on_write-eb8f518812ed8dae)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test cow_mutex::test::test_3 ... ok
[INFO] [stdout] test cow_mutex::test::test_6 ... ok
[INFO] [stdout] test cow_mutex::test::test_5 ... ok
[INFO] [stdout] test cow_mutex::test::test_4 ... ok
[INFO] [stdout] test cow_mutex::test::test_33 ... ok
[INFO] [stdout] test cow_mutex::test::test_7 ... ok
[INFO] [stdout] test cow_mutex::test::test_8 has been running for over 60 seconds
[INFO] [stdout] test cow_mutex::test::test_8 ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- cow_mutex::test::test_8 stdout ----
[INFO] [stdout] 25129
[INFO] [stdout] 
[INFO] [stdout] thread '<unnamed>' (35) panicked at src/cow_mutex.rs:1014:40:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: (ExclusiveLockPending, ICoWCopy { prev_item: ICoWRead { item: Test { s: 1 }, bind: ICoW { inner: RwLock { data: Test { s: 1 }, poisoned: false, .. } } }, new_item: Test { s: 5 }, inst: ICoW { inner: RwLock { data: Test { s: 1 }, poisoned: false, .. } } })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x618d6580d122 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x618d6580d122 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x618d6580d122 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x618d6580d122 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x618d6581d38f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x618d6581d38f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x618d657da571 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x618d657da571 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x618d657e65d2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x618d657eb23f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x618d657eb0d1 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x618d657aa50e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x618d657aa50e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x618d657eb8ff - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x618d657eb8ff - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x618d657eb75a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x618d657e6709 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x618d657cea4d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x618d65824de0 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x618d65824586 - core::result::unwrap_failed::hdde076be853d034f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1855:5
[INFO] [stdout]   20:     0x618d657796e7 - core::result::Result<T,E>::unwrap::hc5bbe96d71f6db12
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1226:23
[INFO] [stdout]   21:     0x618d657796e7 - instance_copy_on_write::cow_mutex::test::test_8::{{closure}}::hace84977b6cce40a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cow_mutex.rs:1014:40
[INFO] [stdout]   22:     0x618d65765c6e - std::sys::backtrace::__rust_begin_short_backtrace::h60254e1b121d394e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   23:     0x618d65765397 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf36fb279af6504d5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   24:     0x618d65775570 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfd0da8da0fbeea7a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   25:     0x618d65766f4b - std::panicking::catch_unwind::do_call::h01d8241aebbad56f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   26:     0x618d6576578b - __rust_try
[INFO] [stdout]   27:     0x618d65764380 - std::panicking::catch_unwind::h4bb10096943dff97
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   28:     0x618d65764380 - std::panic::catch_unwind::hb5b7edcc63afb550
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x618d65764380 - std::thread::Builder::spawn_unchecked_::{{closure}}::hc8b95609c4aec3d8
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   30:     0x618d6576bfee - core::ops::function::FnOnce::call_once{{vtable.shim}}::h948e82facc91fb5d
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   31:     0x618d657e186f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   32:     0x618d657e186f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   33:     0x7804a06aeaa4 - <unknown>
[INFO] [stdout]   34:     0x7804a073ba34 - clone
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] thread 'cow_mutex::test::test_8' (32) panicked at src/cow_mutex.rs:1041:13:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 1
[INFO] [stdout]  right: 5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x618d6580d122 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x618d6580d122 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x618d6580d122 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x618d6580d122 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x618d6581d38f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x618d6581d38f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x618d657da571 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x618d657da571 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x618d657e65d2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x618d657eb23f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x618d657eb0d1 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x618d657aa50e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x618d657aa50e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x618d657eb8ff - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x618d657eb8ff - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x618d657eb75a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x618d657e6709 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x618d657cea4d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x618d65824de0 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x618d65824c83 - core::panicking::assert_failed_inner::h448e1d534f4c3d4b
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x618d65773d1b - core::panicking::assert_failed::h82db15c9ec3b0fda
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x618d6577909f - instance_copy_on_write::cow_mutex::test::test_8::h5c6c3c4905b7d294
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cow_mutex.rs:1041:13
[INFO] [stdout]   22:     0x618d65779457 - instance_copy_on_write::cow_mutex::test::test_8::{{closure}}::h1614dbfd98c72b2f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cow_mutex.rs:987:16
[INFO] [stdout]   23:     0x618d6576c186 - core::ops::function::FnOnce::call_once::h72310da8a38f7a4d
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x618d657aa2cb - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x618d657aa2cb - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x618d657bff35 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x618d657bff35 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x618d657bff35 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x618d657bff35 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x618d657bff35 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x618d657bff35 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x618d657bff35 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x618d65796724 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x618d65796724 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x618d65799fea - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x618d65799fea - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x618d65799fea - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x618d65799fea - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x618d65799fea - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x618d65799fea - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x618d65799fea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x618d657e186f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x618d657e186f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   44:     0x7804a06aeaa4 - <unknown>
[INFO] [stdout]   45:     0x7804a073ba34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     cow_mutex::test::test_8
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 6 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 86.54s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "020c79c239b4cf3e8a4f8605e2aac918d66a4b7d2fc6270bf052d67c67c9c5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020c79c239b4cf3e8a4f8605e2aac918d66a4b7d2fc6270bf052d67c67c9c5df", kill_on_drop: false }`
[INFO] [stdout] 020c79c239b4cf3e8a4f8605e2aac918d66a4b7d2fc6270bf052d67c67c9c5df
