[INFO] fetching crate visiting_ref 0.2.0...
[INFO] testing visiting_ref-0.2.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate visiting_ref 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate visiting_ref 0.2.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate visiting_ref 0.2.0
[INFO] finished tweaking crates.io crate visiting_ref 0.2.0
[INFO] tweaked toml for crates.io crate visiting_ref 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfa18daa071afe5bee7194cc3fe15a4c5efb41dec4fea8f5f0c1b4dc2629dc6b
[INFO] running `Command { std: "docker" "start" "-a" "dfa18daa071afe5bee7194cc3fe15a4c5efb41dec4fea8f5f0c1b4dc2629dc6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfa18daa071afe5bee7194cc3fe15a4c5efb41dec4fea8f5f0c1b4dc2629dc6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa18daa071afe5bee7194cc3fe15a4c5efb41dec4fea8f5f0c1b4dc2629dc6b", kill_on_drop: false }`
[INFO] [stdout] dfa18daa071afe5bee7194cc3fe15a4c5efb41dec4fea8f5f0c1b4dc2629dc6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d55c33221fe2640799ba1d1bd48d781f12a8ec8c677edc22ac9e7d813aa26ce
[INFO] running `Command { std: "docker" "start" "-a" "0d55c33221fe2640799ba1d1bd48d781f12a8ec8c677edc22ac9e7d813aa26ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling visiting_ref v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.84s
[INFO] running `Command { std: "docker" "inspect" "0d55c33221fe2640799ba1d1bd48d781f12a8ec8c677edc22ac9e7d813aa26ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d55c33221fe2640799ba1d1bd48d781f12a8ec8c677edc22ac9e7d813aa26ce", kill_on_drop: false }`
[INFO] [stdout] 0d55c33221fe2640799ba1d1bd48d781f12a8ec8c677edc22ac9e7d813aa26ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b74ab2f9d188535e7b0861f39b9bf6faaa5100b2267e0aa95d60b8b2fd5317e
[INFO] running `Command { std: "docker" "start" "-a" "2b74ab2f9d188535e7b0861f39b9bf6faaa5100b2267e0aa95d60b8b2fd5317e", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-executor v0.3.15
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling visiting_ref v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.50s
[INFO] running `Command { std: "docker" "inspect" "2b74ab2f9d188535e7b0861f39b9bf6faaa5100b2267e0aa95d60b8b2fd5317e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b74ab2f9d188535e7b0861f39b9bf6faaa5100b2267e0aa95d60b8b2fd5317e", kill_on_drop: false }`
[INFO] [stdout] 2b74ab2f9d188535e7b0861f39b9bf6faaa5100b2267e0aa95d60b8b2fd5317e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d705ee718165028f2f77f8a6e6acc8a9a46f734a4821187f22c74c7b291dd516
[INFO] running `Command { std: "docker" "start" "-a" "d705ee718165028f2f77f8a6e6acc8a9a46f734a4821187f22c74c7b291dd516", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/visiting_ref-33f6a1d2581d1669)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::fmt_binary_impl_works ... ok
[INFO] [stdout] test tests::fmt_debug_impl_works ... ok
[INFO] [stdout] test tests::fmt_display_impl_works ... ok
[INFO] [stdout] test tests::fmt_lower_exp_impl_works ... ok
[INFO] [stdout] test tests::fmt_octal_impl_works ... ok
[INFO] [stdout] test tests::fmt_lower_hex_impl_works ... ok
[INFO] [stdout] test tests::fmt_pointer_impl_works ... ok
[INFO] [stdout] test tests::fmt_upper_exp_impl_works ... ok
[INFO] [stdout] test tests::fmt_upper_hex_impl_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests visiting_ref
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - (line 253) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/lib.rs - (line 47) ... ok
[INFO] [stdout] test src/lib.rs - VisitingMut<T>::new (line 521) ... ok
[INFO] [stdout] test src/lib.rs - VisitingMut<T>::downgrade (line 546) ... ok
[INFO] [stdout] test src/lib.rs - (line 282) ... ok
[INFO] [stdout] test src/lib.rs - VisitingMut<T>::run_with (line 569) ... ok
[INFO] [stdout] test src/lib.rs - VisitingRef<T>::run_with (line 459) ... ok
[INFO] [stdout] test src/lib.rs - (line 81) ... ok
[INFO] [stdout] test src/lib.rs - VisitingRef<T>::new (line 435) ... ok
[INFO] [stdout] test src/lib.rs - (line 326) ... ok
[INFO] [stdout] test src/lib.rs - (line 123) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.76s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d705ee718165028f2f77f8a6e6acc8a9a46f734a4821187f22c74c7b291dd516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d705ee718165028f2f77f8a6e6acc8a9a46f734a4821187f22c74c7b291dd516", kill_on_drop: false }`
[INFO] [stdout] d705ee718165028f2f77f8a6e6acc8a9a46f734a4821187f22c74c7b291dd516