[INFO] fetching crate sssignals 0.2.1...
[INFO] testing sssignals-0.2.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate sssignals 0.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate sssignals 0.2.1
[INFO] finished tweaking crates.io crate sssignals 0.2.1
[INFO] tweaked toml for crates.io crate sssignals 0.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sssignals 0.2.1 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d31fd09db9044aa7e197df9cf877a19956ef73cf8f859bfd6c079c07c79960a7
[INFO] running `Command { std: "docker" "start" "-a" "d31fd09db9044aa7e197df9cf877a19956ef73cf8f859bfd6c079c07c79960a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d31fd09db9044aa7e197df9cf877a19956ef73cf8f859bfd6c079c07c79960a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d31fd09db9044aa7e197df9cf877a19956ef73cf8f859bfd6c079c07c79960a7", kill_on_drop: false }`
[INFO] [stdout] d31fd09db9044aa7e197df9cf877a19956ef73cf8f859bfd6c079c07c79960a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fbbaacbff4b3054e715af216656b7b159d498b9a510ea1e4d29bdd3b37fe184
[INFO] running `Command { std: "docker" "start" "-a" "1fbbaacbff4b3054e715af216656b7b159d498b9a510ea1e4d29bdd3b37fe184", kill_on_drop: false }`
[INFO] [stderr]    Compiling sssignals v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "1fbbaacbff4b3054e715af216656b7b159d498b9a510ea1e4d29bdd3b37fe184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fbbaacbff4b3054e715af216656b7b159d498b9a510ea1e4d29bdd3b37fe184", kill_on_drop: false }`
[INFO] [stdout] 1fbbaacbff4b3054e715af216656b7b159d498b9a510ea1e4d29bdd3b37fe184
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd10dfc72f9cfa30498c23ca8ce3fb97190c0b2787c5154bfdd30b5f1a4132f5
[INFO] running `Command { std: "docker" "start" "-a" "bd10dfc72f9cfa30498c23ca8ce3fb97190c0b2787c5154bfdd30b5f1a4132f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling sssignals v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value captured by `counter` is never read
[INFO] [stdout]    --> src/lib.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 |             counter += 1;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `counter` is never read
[INFO] [stdout]    --> src/lib.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 |             counter += 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "bd10dfc72f9cfa30498c23ca8ce3fb97190c0b2787c5154bfdd30b5f1a4132f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd10dfc72f9cfa30498c23ca8ce3fb97190c0b2787c5154bfdd30b5f1a4132f5", kill_on_drop: false }`
[INFO] [stdout] bd10dfc72f9cfa30498c23ca8ce3fb97190c0b2787c5154bfdd30b5f1a4132f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1abf754f8c6af905a5c634132057d1d1df6ebfe7a40c72085f176cdb228d8aac
[INFO] running `Command { std: "docker" "start" "-a" "1abf754f8c6af905a5c634132057d1d1df6ebfe7a40c72085f176cdb228d8aac", kill_on_drop: false }`
[INFO] [stderr] warning: value captured by `counter` is never read
[INFO] [stderr]    --> src/lib.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 |             counter += 1;
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: did you mean to capture by reference instead?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `counter` is never read
[INFO] [stderr]    --> src/lib.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 |             counter += 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `sssignals` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sssignals-74a49a44193cc4cc)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test tests::test_debug_trait ... ok
[INFO] [stdout] test tests::test_default_trait ... ok
[INFO] [stdout] test tests::test_display_trait ... ok
[INFO] [stdout] test tests::test_get ... ok
[INFO] [stdout] test tests::test_no_outside_changes ... ok
[INFO] [stdout] test tests::test_signal_map_generic_types ... ok
[INFO] [stdout] test tests::test_signal_on_change_with_different_values ... ok
[INFO] [stdout] test tests::test_signal_value_copy ... ok
[INFO] [stdout] test tests::test_signal_value_copy_does_not_change_original ... ok
[INFO] [stdout] test tests::test_signal_map ... ok
[INFO] [stdout] test tests::test_signal_map_does_not_change_original ... ok
[INFO] [stdout] test tests::test_signal_new ... ok
[INFO] [stdout] test tests::test_signal_on_change_no_callback ... ok
[INFO] [stdout] test tests::test_signal_set ... ok
[INFO] [stdout] test tests::test_signal_on_change ... ok
[INFO] [stdout] test tests::test_refcell_outside_changes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sssignals
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - Signal<T>::set (line 58) ... ok
[INFO] [stdout] test src/lib.rs - Signal<T>::on_change (line 74) ... ok
[INFO] [stdout] test src/lib.rs - Signal<T>::map (line 104) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1abf754f8c6af905a5c634132057d1d1df6ebfe7a40c72085f176cdb228d8aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1abf754f8c6af905a5c634132057d1d1df6ebfe7a40c72085f176cdb228d8aac", kill_on_drop: false }`
[INFO] [stdout] 1abf754f8c6af905a5c634132057d1d1df6ebfe7a40c72085f176cdb228d8aac