[INFO] fetching crate arc-guard 0.2.0...
[INFO] testing arc-guard-0.2.0 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate arc-guard 0.2.0 into /workspace/builds/worker-6-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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arc-guard 0.2.0 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6098a1704b5605eecfe262b132201416bdc5ef40ad17c8b3f9f365aae5fa6d9e
[INFO] running `Command { std: "docker" "start" "-a" "6098a1704b5605eecfe262b132201416bdc5ef40ad17c8b3f9f365aae5fa6d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6098a1704b5605eecfe262b132201416bdc5ef40ad17c8b3f9f365aae5fa6d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6098a1704b5605eecfe262b132201416bdc5ef40ad17c8b3f9f365aae5fa6d9e", kill_on_drop: false }`
[INFO] [stdout] 6098a1704b5605eecfe262b132201416bdc5ef40ad17c8b3f9f365aae5fa6d9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 147db548d4edf55ea610f7eaa2e71bce340f0a81d9062b9c1cd77659a3ad3969
[INFO] running `Command { std: "docker" "start" "-a" "147db548d4edf55ea610f7eaa2e71bce340f0a81d9062b9c1cd77659a3ad3969", 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 0.12s
[INFO] running `Command { std: "docker" "inspect" "147db548d4edf55ea610f7eaa2e71bce340f0a81d9062b9c1cd77659a3ad3969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147db548d4edf55ea610f7eaa2e71bce340f0a81d9062b9c1cd77659a3ad3969", kill_on_drop: false }`
[INFO] [stdout] 147db548d4edf55ea610f7eaa2e71bce340f0a81d9062b9c1cd77659a3ad3969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cd894e71916ff4a24753a0ef4d50a4422680d9ffa98f166ad597708833588b2
[INFO] running `Command { std: "docker" "start" "-a" "0cd894e71916ff4a24753a0ef4d50a4422680d9ffa98f166ad597708833588b2", 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 0.34s
[INFO] running `Command { std: "docker" "inspect" "0cd894e71916ff4a24753a0ef4d50a4422680d9ffa98f166ad597708833588b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd894e71916ff4a24753a0ef4d50a4422680d9ffa98f166ad597708833588b2", kill_on_drop: false }`
[INFO] [stdout] 0cd894e71916ff4a24753a0ef4d50a4422680d9ffa98f166ad597708833588b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d71ab2f97f0b112844a0f7fd8348e095e475be73c096c011a8c0f5bac5bbd6e8
[INFO] running `Command { std: "docker" "start" "-a" "d71ab2f97f0b112844a0f7fd8348e095e475be73c096c011a8c0f5bac5bbd6e8", 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 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/arc_guard-b6b07249cec793da)
[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] [stderr]    Doc-tests arc_guard
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::execute (line 62) ... FAILED
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::arc (line 98) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 8) ... FAILED
[INFO] [stdout] test src/lib.rs - ArcGuard<T>::clone (line 113) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 22) ... 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] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[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 - 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 - (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 - 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 - (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] ---- 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] 
[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 0.33s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "d71ab2f97f0b112844a0f7fd8348e095e475be73c096c011a8c0f5bac5bbd6e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d71ab2f97f0b112844a0f7fd8348e095e475be73c096c011a8c0f5bac5bbd6e8", kill_on_drop: false }`
[INFO] [stdout] d71ab2f97f0b112844a0f7fd8348e095e475be73c096c011a8c0f5bac5bbd6e8
