[INFO] fetching crate instance-copy-on-write 0.4.0...
[INFO] testing instance-copy-on-write-0.4.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate instance-copy-on-write 0.4.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate instance-copy-on-write 0.4.0
[INFO] finished tweaking crates.io crate instance-copy-on-write 0.4.0
[INFO] tweaked toml for crates.io crate instance-copy-on-write 0.4.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate instance-copy-on-write 0.4.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate instance-copy-on-write 0.4.0 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77bebb06e115b0fe26c98db208ebbc0988750a93a32424fec3ce557c39d58709
[INFO] running `Command { std: "docker" "start" "-a" "77bebb06e115b0fe26c98db208ebbc0988750a93a32424fec3ce557c39d58709", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77bebb06e115b0fe26c98db208ebbc0988750a93a32424fec3ce557c39d58709", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77bebb06e115b0fe26c98db208ebbc0988750a93a32424fec3ce557c39d58709", kill_on_drop: false }`
[INFO] [stdout] 77bebb06e115b0fe26c98db208ebbc0988750a93a32424fec3ce557c39d58709
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ac7819751089add0782fed693e7129296b3f2865e03a815be1d222bdcce8c21
[INFO] running `Command { std: "docker" "start" "-a" "6ac7819751089add0782fed693e7129296b3f2865e03a815be1d222bdcce8c21", kill_on_drop: false }`
[INFO] [stderr]    Compiling instance-copy-on-write v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `bind` is never read
[INFO] [stdout]   --> src/cow_mutex.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     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:219:5
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 219 |     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 0.24s
[INFO] running `Command { std: "docker" "inspect" "6ac7819751089add0782fed693e7129296b3f2865e03a815be1d222bdcce8c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ac7819751089add0782fed693e7129296b3f2865e03a815be1d222bdcce8c21", kill_on_drop: false }`
[INFO] [stdout] 6ac7819751089add0782fed693e7129296b3f2865e03a815be1d222bdcce8c21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3515723ed61b3a8d5a0e887307ed1eb75d6bdbded495c060aa7d8f492bf16279
[INFO] running `Command { std: "docker" "start" "-a" "3515723ed61b3a8d5a0e887307ed1eb75d6bdbded495c060aa7d8f492bf16279", kill_on_drop: false }`
[INFO] [stdout] warning: field `bind` is never read
[INFO] [stdout]   --> src/cow_mutex.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     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:219:5
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 219 |     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 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:102:34
[INFO] [stdout]     |
[INFO] [stdout] 102 |         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/lib.rs:123:34
[INFO] [stdout]     |
[INFO] [stdout] 123 |         struct Test { s: String };
[INFO] [stdout]     |                                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read0`
[INFO] [stdout]    --> src/lib.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |             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/lib.rs:155:13
[INFO] [stdout]     |
[INFO] [stdout] 155 |         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/lib.rs:249:13
[INFO] [stdout]     |
[INFO] [stdout] 249 |         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/lib.rs:250:13
[INFO] [stdout]     |
[INFO] [stdout] 250 |         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/lib.rs:393:17
[INFO] [stdout]     |
[INFO] [stdout] 393 |             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/lib.rs:394:17
[INFO] [stdout]     |
[INFO] [stdout] 394 |             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:30:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     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:219:5
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 219 |     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/lib.rs:102:23
[INFO] [stdout]     |
[INFO] [stdout] 102 |         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/lib.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |         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 0.83s
[INFO] running `Command { std: "docker" "inspect" "3515723ed61b3a8d5a0e887307ed1eb75d6bdbded495c060aa7d8f492bf16279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3515723ed61b3a8d5a0e887307ed1eb75d6bdbded495c060aa7d8f492bf16279", kill_on_drop: false }`
[INFO] [stdout] 3515723ed61b3a8d5a0e887307ed1eb75d6bdbded495c060aa7d8f492bf16279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 95ee43aa6deebceab0ffc8a04f294f001edaf9bdd219ff235e0da477b0e4b30e
[INFO] running `Command { std: "docker" "start" "-a" "95ee43aa6deebceab0ffc8a04f294f001edaf9bdd219ff235e0da477b0e4b30e", kill_on_drop: false }`
[INFO] [stderr] warning: field `bind` is never read
[INFO] [stderr]   --> src/cow_mutex.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct ICoWRead<'read, ITEM: fmt::Debug + Send>
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 30 |     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:219:5
[INFO] [stderr]     |
[INFO] [stderr] 210 | pub struct ICoWLock<'lock, ITEM: fmt::Debug + Send>
[INFO] [stderr]     |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 219 |     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 2 warnings
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:102:34
[INFO] [stderr]     |
[INFO] [stderr] 102 |         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/lib.rs:123:34
[INFO] [stderr]     |
[INFO] [stderr] 123 |         struct Test { s: String };
[INFO] [stderr]     |                                  ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `read0`
[INFO] [stderr]    --> src/lib.rs:110:17
[INFO] [stderr]     |
[INFO] [stderr] 110 |             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/lib.rs:155:13
[INFO] [stderr]     |
[INFO] [stderr] 155 |         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/lib.rs:249:13
[INFO] [stderr]     |
[INFO] [stderr] 249 |         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/lib.rs:250:13
[INFO] [stderr]     |
[INFO] [stderr] 250 |         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/lib.rs:393:17
[INFO] [stderr]     |
[INFO] [stderr] 393 |             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/lib.rs:394:17
[INFO] [stderr]     |
[INFO] [stderr] 394 |             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/lib.rs:102:23
[INFO] [stderr]     |
[INFO] [stderr] 102 |         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/lib.rs:123:23
[INFO] [stderr]     |
[INFO] [stderr] 123 |         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 12 warnings (2 duplicates) (run `cargo fix --lib -p instance-copy-on-write --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/instance_copy_on_write-161a165644eb8cae)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test::test_33 ... ok
[INFO] [stdout] test test::test_3 ... ok
[INFO] [stdout] test test::test_4 ... ok
[INFO] [stdout] test test::test_5 ... ok
[INFO] [stdout] test test::test_6 ... ok
[INFO] [stdout] test test::test_8 ... ok
[INFO] [stdout] test test::test_7 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests instance_copy_on_write
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/cow_mutex.rs - cow_mutex::ICoW (line 292) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.28s; merged doctests compilation took 0.28s
[INFO] running `Command { std: "docker" "inspect" "95ee43aa6deebceab0ffc8a04f294f001edaf9bdd219ff235e0da477b0e4b30e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95ee43aa6deebceab0ffc8a04f294f001edaf9bdd219ff235e0da477b0e4b30e", kill_on_drop: false }`
[INFO] [stdout] 95ee43aa6deebceab0ffc8a04f294f001edaf9bdd219ff235e0da477b0e4b30e
