[INFO] fetching crate arc-guard 0.2.0...
[INFO] testing arc-guard-0.2.0 against 1.94.0 for beta-1.95-1
[INFO] extracting crate arc-guard 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate arc-guard 0.2.0
[INFO] finished tweaking crates.io crate arc-guard 0.2.0
[INFO] tweaked toml for crates.io crate arc-guard 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arc-guard 0.2.0 on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75d23a2ab28ac2177fce8bd75b197fd939649330edfa816561c099567f936d96
[INFO] running `Command { std: "docker" "start" "-a" "75d23a2ab28ac2177fce8bd75b197fd939649330edfa816561c099567f936d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75d23a2ab28ac2177fce8bd75b197fd939649330edfa816561c099567f936d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d23a2ab28ac2177fce8bd75b197fd939649330edfa816561c099567f936d96", kill_on_drop: false }`
[INFO] [stdout] 75d23a2ab28ac2177fce8bd75b197fd939649330edfa816561c099567f936d96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26e65e6c890408160d285e318b885078d7a807911ac2bfb03bf22345846e6246
[INFO] running `Command { std: "docker" "start" "-a" "26e65e6c890408160d285e318b885078d7a807911ac2bfb03bf22345846e6246", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc-guard v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "26e65e6c890408160d285e318b885078d7a807911ac2bfb03bf22345846e6246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26e65e6c890408160d285e318b885078d7a807911ac2bfb03bf22345846e6246", kill_on_drop: false }`
[INFO] [stdout] 26e65e6c890408160d285e318b885078d7a807911ac2bfb03bf22345846e6246
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5350ac337d8861541432ab99bab6e42af7d0034ca178ad3bc86dedd65357c816
[INFO] running `Command { std: "docker" "start" "-a" "5350ac337d8861541432ab99bab6e42af7d0034ca178ad3bc86dedd65357c816", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc-guard v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `indicator`
[INFO] [stdout]    --> src/lib.rs:139:41
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let string = indicator.execute(|indicator| -> String {
[INFO] [stdout]     |                                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_indicator`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "5350ac337d8861541432ab99bab6e42af7d0034ca178ad3bc86dedd65357c816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5350ac337d8861541432ab99bab6e42af7d0034ca178ad3bc86dedd65357c816", kill_on_drop: false }`
[INFO] [stdout] 5350ac337d8861541432ab99bab6e42af7d0034ca178ad3bc86dedd65357c816
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bc9f9a4cd4fe53a877611c1cf908d760f8deb728bf073150f1a06317ee6a1090
[INFO] running `Command { std: "docker" "start" "-a" "bc9f9a4cd4fe53a877611c1cf908d760f8deb728bf073150f1a06317ee6a1090", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `indicator`
[INFO] [stderr]    --> src/lib.rs:139:41
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let string = indicator.execute(|indicator| -> String {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_indicator`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `arc-guard` (lib test) generated 1 warning (run `cargo fix --lib -p arc-guard --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/arc_guard-d4243481aeef05d1)
[INFO] [stderr]    Doc-tests arc_guard
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::clone (line 113) ... FAILED
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::new (line 45) ... FAILED
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::execute (line 78) ... FAILED
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::arc (line 98) ... FAILED
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::execute (line 62) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 8) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 22) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - ArcGuard<T>::clone (line 113) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]    --> src/lib.rs:117:31
[INFO] [stdout]     |
[INFO] [stdout] 117 | let indicator = ArcGuard::new(Indicator::new());
[INFO] [stdout]     |                               ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - ArcGuard<T>::new (line 45) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]   --> src/lib.rs:49:31
[INFO] [stdout]    |
[INFO] [stdout] 49 | let indicator = ArcGuard::new(Indicator::new());
[INFO] [stdout]    |                               ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - ArcGuard<T>::execute (line 78) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]   --> src/lib.rs:82:31
[INFO] [stdout]    |
[INFO] [stdout] 82 | let indicator = ArcGuard::new(Indicator::new());
[INFO] [stdout]    |                               ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:84:46
[INFO] [stdout]    |
[INFO] [stdout] 84 | let some_string: String = indicator.execute(|indicator| -> String {
[INFO] [stdout]    |                                              ^^^^^^^^^
[INFO] [stdout] 85 |     let indicator = indicator.lock().expect("Unable to lock indicator.");
[INFO] [stdout]    |                     --------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 84 | let some_string: String = indicator.execute(|indicator: /* Type */| -> String {
[INFO] [stdout]    |                                                       ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - ArcGuard<T>::arc (line 98) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]    --> src/lib.rs:102:31
[INFO] [stdout]     |
[INFO] [stdout] 102 | let indicator = ArcGuard::new(Indicator::new());
[INFO] [stdout]     |                               ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - ArcGuard<T>::execute (line 62) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]   --> src/lib.rs:66:31
[INFO] [stdout]    |
[INFO] [stdout] 66 | let indicator = ArcGuard::new(Indicator::new());
[INFO] [stdout]    |                               ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:68:20
[INFO] [stdout]    |
[INFO] [stdout] 68 | indicator.execute(|indicator| {
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout] 69 |     let indicator = indicator.lock().expect("Unable to lock indicator.");
[INFO] [stdout]    |                     --------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 68 | indicator.execute(|indicator: /* Type */| {
[INFO] [stdout]    |                             ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 8) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]   --> src/lib.rs:11:37
[INFO] [stdout]    |
[INFO] [stdout] 11 | let indicator = Arc::new(Mutex::new(Indicator::new()));
[INFO] [stdout]    |                                     ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 22) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Indicator`
[INFO] [stdout]   --> src/lib.rs:26:31
[INFO] [stdout]    |
[INFO] [stdout] 26 | let indicator = ArcGuard::new(Indicator::new());
[INFO] [stdout]    |                               ^^^^^^^^^ use of undeclared type `Indicator`
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 | indicator.execute(|indicator| {
[INFO] [stdout]    |                    ^^^^^^^^^
[INFO] [stdout] 29 |     let indicator = indicator.lock().expect("Unable to lock indicator.");
[INFO] [stdout]    |                     --------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 28 | indicator.execute(|indicator: /* Type */| {
[INFO] [stdout]    |                             ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 22)
[INFO] [stdout]     src/lib.rs - (line 8)
[INFO] [stdout]     src/lib.rs - ArcGuard<T>::arc (line 98)
[INFO] [stdout]     src/lib.rs - ArcGuard<T>::clone (line 113)
[INFO] [stdout]     src/lib.rs - ArcGuard<T>::execute (line 62)
[INFO] [stdout]     src/lib.rs - ArcGuard<T>::execute (line 78)
[INFO] [stdout]     src/lib.rs - ArcGuard<T>::new (line 45)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 7 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.64s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "bc9f9a4cd4fe53a877611c1cf908d760f8deb728bf073150f1a06317ee6a1090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc9f9a4cd4fe53a877611c1cf908d760f8deb728bf073150f1a06317ee6a1090", kill_on_drop: false }`
[INFO] [stdout] bc9f9a4cd4fe53a877611c1cf908d760f8deb728bf073150f1a06317ee6a1090
