[INFO] fetching crate instance-copy-on-write 0.7.0... [INFO] testing instance-copy-on-write-0.7.0 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681 [INFO] extracting crate instance-copy-on-write 0.7.0 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate instance-copy-on-write 0.7.0 [INFO] finished tweaking crates.io crate instance-copy-on-write 0.7.0 [INFO] tweaked toml for crates.io crate instance-copy-on-write 0.7.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate instance-copy-on-write 0.7.0 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate instance-copy-on-write 0.7.0 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f2d91cfb2d35c17ecf2755072bde4fff98b75b04cb58add62a56d93e40883ca3 [INFO] running `Command { std: "docker" "start" "-a" "f2d91cfb2d35c17ecf2755072bde4fff98b75b04cb58add62a56d93e40883ca3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f2d91cfb2d35c17ecf2755072bde4fff98b75b04cb58add62a56d93e40883ca3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f2d91cfb2d35c17ecf2755072bde4fff98b75b04cb58add62a56d93e40883ca3", kill_on_drop: false }` [INFO] [stdout] f2d91cfb2d35c17ecf2755072bde4fff98b75b04cb58add62a56d93e40883ca3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ab0f97894a1ca1f4ebf6f43cb14810e8f8e6d11246ea7b4e71ff3cbe17cf24cc [INFO] running `Command { std: "docker" "start" "-a" "ab0f97894a1ca1f4ebf6f43cb14810e8f8e6d11246ea7b4e71ff3cbe17cf24cc", kill_on_drop: false }` [INFO] [stderr] Compiling instance-copy-on-write v0.7.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s [INFO] running `Command { std: "docker" "inspect" "ab0f97894a1ca1f4ebf6f43cb14810e8f8e6d11246ea7b4e71ff3cbe17cf24cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab0f97894a1ca1f4ebf6f43cb14810e8f8e6d11246ea7b4e71ff3cbe17cf24cc", kill_on_drop: false }` [INFO] [stdout] ab0f97894a1ca1f4ebf6f43cb14810e8f8e6d11246ea7b4e71ff3cbe17cf24cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b140149ec040874aabb9cd149beca565d591abcd82c6561708c6e7c26c4f9c4a [INFO] running `Command { std: "docker" "start" "-a" "b140149ec040874aabb9cd149beca565d591abcd82c6561708c6e7c26c4f9c4a", kill_on_drop: false }` [INFO] [stderr] Compiling instance-copy-on-write v0.7.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/lib.rs:189:34 [INFO] [stdout] | [INFO] [stdout] 189 | 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: unused variable: `read0` [INFO] [stdout] --> src/lib.rs:176:17 [INFO] [stdout] | [INFO] [stdout] 176 | 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:221:13 [INFO] [stdout] | [INFO] [stdout] 221 | 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: `rc` [INFO] [stdout] --> src/lib.rs:425:18 [INFO] [stdout] | [INFO] [stdout] 425 | let (se, rc) = mpsc::channel::<()>(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_rc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `read0` [INFO] [stdout] --> src/lib.rs:493:13 [INFO] [stdout] | [INFO] [stdout] 493 | 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:494:13 [INFO] [stdout] | [INFO] [stdout] 494 | 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:686:17 [INFO] [stdout] | [INFO] [stdout] 686 | 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:687:17 [INFO] [stdout] | [INFO] [stdout] 687 | 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 `s` is never read [INFO] [stdout] --> src/lib.rs:168:23 [INFO] [stdout] | [INFO] [stdout] 168 | 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] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `s` is never read [INFO] [stdout] --> src/lib.rs:189:23 [INFO] [stdout] | [INFO] [stdout] 189 | 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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:471:17 [INFO] [stdout] | [INFO] [stdout] 471 | se2.send(()); [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] 471 | let _ = se2.send(()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s [INFO] running `Command { std: "docker" "inspect" "b140149ec040874aabb9cd149beca565d591abcd82c6561708c6e7c26c4f9c4a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b140149ec040874aabb9cd149beca565d591abcd82c6561708c6e7c26c4f9c4a", kill_on_drop: false }` [INFO] [stdout] b140149ec040874aabb9cd149beca565d591abcd82c6561708c6e7c26c4f9c4a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] cc6f060006e2877a8a22406710456de8e5407def508f885aa94c23406be11c81 [INFO] running `Command { std: "docker" "start" "-a" "cc6f060006e2877a8a22406710456de8e5407def508f885aa94c23406be11c81", kill_on_drop: false }` [INFO] [stderr] warning: unnecessary trailing semicolon [INFO] [stderr] --> src/lib.rs:189:34 [INFO] [stderr] | [INFO] [stderr] 189 | 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: unused variable: `read0` [INFO] [stderr] --> src/lib.rs:176:17 [INFO] [stderr] | [INFO] [stderr] 176 | 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:221:13 [INFO] [stderr] | [INFO] [stderr] 221 | let read1 = icow.read(); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_read1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rc` [INFO] [stderr] --> src/lib.rs:425:18 [INFO] [stderr] | [INFO] [stderr] 425 | let (se, rc) = mpsc::channel::<()>(); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_rc` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `read0` [INFO] [stderr] --> src/lib.rs:493:13 [INFO] [stderr] | [INFO] [stderr] 493 | 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:494:13 [INFO] [stderr] | [INFO] [stderr] 494 | 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:686:17 [INFO] [stderr] | [INFO] [stderr] 686 | 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:687:17 [INFO] [stderr] | [INFO] [stderr] 687 | 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:168:23 [INFO] [stderr] | [INFO] [stderr] 168 | 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] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: field `s` is never read [INFO] [stderr] --> src/lib.rs:189:23 [INFO] [stderr] | [INFO] [stderr] 189 | 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: unused `Result` that must be used [INFO] [stderr] --> src/lib.rs:471:17 [INFO] [stderr] | [INFO] [stderr] 471 | se2.send(()); [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] 471 | let _ = se2.send(()); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `instance-copy-on-write` (lib test) generated 11 warnings (run `cargo fix --lib -p instance-copy-on-write --tests` to apply 7 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/instance_copy_on_write-e43639bc8250274e) [INFO] [stdout] [INFO] [stdout] running 11 tests [INFO] [stdout] test test::test_4 ... ok [INFO] [stdout] test test::test_3 ... ok [INFO] [stdout] test test::test_33 ... ok [INFO] [stdout] test test::test_5 ... ok [INFO] [stdout] test test::test_6 ... ok [INFO] [stdout] test test::test_5_read_lock ... ok [INFO] [stdout] test test::test_8 ... ok [INFO] [stdout] test test::test_7 ... ok [INFO] [stdout] test test::text_9_exclu_lock_pend ... ok [INFO] [stdout] test test::test_6_drop ... ok [INFO] [stdout] test test::test_parking_lot_reader_wakeup ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.01s [INFO] [stdout] [INFO] [stderr] Doc-tests instance_copy_on_write [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test src/cow_mutex.rs - cow_mutex::ICoW (line 392) ... ignored [INFO] [stdout] test src/cow_refcell.rs - cow_refcell::ICoW (line 209) ... ignored [INFO] [stdout] test src/lib.rs - (line 35) ... ignored [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] all doctests ran in 0.25s; merged doctests compilation took 0.24s [INFO] running `Command { std: "docker" "inspect" "cc6f060006e2877a8a22406710456de8e5407def508f885aa94c23406be11c81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cc6f060006e2877a8a22406710456de8e5407def508f885aa94c23406be11c81", kill_on_drop: false }` [INFO] [stdout] cc6f060006e2877a8a22406710456de8e5407def508f885aa94c23406be11c81