[INFO] fetching crate tf_observer 0.1.3...
[INFO] testing tf_observer-0.1.3 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate tf_observer 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tf_observer 0.1.3
[INFO] finished tweaking crates.io crate tf_observer 0.1.3
[INFO] tweaked toml for crates.io crate tf_observer 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tf_observer 0.1.3 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 63 packages to latest compatible versions
[INFO] [stderr]       Adding mockall v0.11.4 (available: v0.14.0)
[INFO] [stderr]       Adding mockito v0.31.1 (available: v1.7.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d99c691b70304598e3677fb225f88c3b6423ebfdc2319021f762c97d1f6ba826
[INFO] running `Command { std: "docker" "start" "-a" "d99c691b70304598e3677fb225f88c3b6423ebfdc2319021f762c97d1f6ba826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d99c691b70304598e3677fb225f88c3b6423ebfdc2319021f762c97d1f6ba826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d99c691b70304598e3677fb225f88c3b6423ebfdc2319021f762c97d1f6ba826", kill_on_drop: false }`
[INFO] [stdout] d99c691b70304598e3677fb225f88c3b6423ebfdc2319021f762c97d1f6ba826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14a4085e50cec7cf7f4ea886494b8ecb65eafda29b77bc7df9343d745fc47691
[INFO] running `Command { std: "docker" "start" "-a" "14a4085e50cec7cf7f4ea886494b8ecb65eafda29b77bc7df9343d745fc47691", kill_on_drop: false }`
[INFO] [stderr]    Compiling tf_observer v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "14a4085e50cec7cf7f4ea886494b8ecb65eafda29b77bc7df9343d745fc47691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14a4085e50cec7cf7f4ea886494b8ecb65eafda29b77bc7df9343d745fc47691", kill_on_drop: false }`
[INFO] [stdout] 14a4085e50cec7cf7f4ea886494b8ecb65eafda29b77bc7df9343d745fc47691
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0838e19459cf7f4664305c3302b9e654819b1598e15716f60d03adb2f1c0563
[INFO] running `Command { std: "docker" "start" "-a" "c0838e19459cf7f4664305c3302b9e654819b1598e15716f60d03adb2f1c0563", kill_on_drop: false }`
[INFO] [stderr]    Compiling predicates-core v1.0.10
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling termtree v0.5.1
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling fragile v2.1.0
[INFO] [stderr]    Compiling downcast v0.11.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling similar v2.7.0
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling predicates-tree v1.0.13
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling assert-json-diff v2.0.2
[INFO] [stderr]    Compiling mockito v0.31.1
[INFO] [stderr]    Compiling predicates v2.1.5
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling mockall v0.11.4
[INFO] [stderr]    Compiling tf_observer v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 12.52s
[INFO] running `Command { std: "docker" "inspect" "c0838e19459cf7f4664305c3302b9e654819b1598e15716f60d03adb2f1c0563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0838e19459cf7f4664305c3302b9e654819b1598e15716f60d03adb2f1c0563", kill_on_drop: false }`
[INFO] [stdout] c0838e19459cf7f4664305c3302b9e654819b1598e15716f60d03adb2f1c0563
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9c39aa0106c64f1e1b4e3b463e0408d047d405f879678b1b11c3b7b3b2590ca4
[INFO] running `Command { std: "docker" "start" "-a" "9c39aa0106c64f1e1b4e3b463e0408d047d405f879678b1b11c3b7b3b2590ca4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tf_observer-f626b257dbb21ad2)
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test::observable_multi_observer ... ok
[INFO] [stdout] test test::observer_list_notify ... ok
[INFO] [stdout] test test::observer_list_test_clone_pre_attach ... ok
[INFO] [stdout] test test::observer_list_attach_detach ... ok
[INFO] [stdout] test test::observer_list_test_drop_inactive ... ok
[INFO] [stdout] test test::observer_list_test_clone ... ok
[INFO] [stderr]    Doc-tests tf_observer
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9c39aa0106c64f1e1b4e3b463e0408d047d405f879678b1b11c3b7b3b2590ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c39aa0106c64f1e1b4e3b463e0408d047d405f879678b1b11c3b7b3b2590ca4", kill_on_drop: false }`
[INFO] [stdout] 9c39aa0106c64f1e1b4e3b463e0408d047d405f879678b1b11c3b7b3b2590ca4