[INFO] fetching crate tf_observer 0.1.3...
[INFO] testing tf_observer-0.1.3 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate tf_observer 0.1.3 into /workspace/builds/worker-5-tc1/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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tf_observer 0.1.3 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding mockall v0.11.4 (available: v0.13.1)
[INFO] [stderr]       Adding mockito v0.31.1 (available: v1.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded downcast v0.11.0
[INFO] [stderr]   Downloaded mockito v0.31.1
[INFO] [stderr]   Downloaded fragile v2.0.1
[INFO] [stderr]   Downloaded mockall_derive v0.11.4
[INFO] [stderr]   Downloaded predicates v2.1.5
[INFO] [stderr]   Downloaded mockall v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d42457b2d4ce36c7f670f047f237819c7a781670df8595357a8ea466e172257c
[INFO] running `Command { std: "docker" "start" "-a" "d42457b2d4ce36c7f670f047f237819c7a781670df8595357a8ea466e172257c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d42457b2d4ce36c7f670f047f237819c7a781670df8595357a8ea466e172257c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d42457b2d4ce36c7f670f047f237819c7a781670df8595357a8ea466e172257c", kill_on_drop: false }`
[INFO] [stdout] d42457b2d4ce36c7f670f047f237819c7a781670df8595357a8ea466e172257c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58517abfbe903ac7fd397587aab8c121206270246e03e76abbdbf7e9e5283018
[INFO] running `Command { std: "docker" "start" "-a" "58517abfbe903ac7fd397587aab8c121206270246e03e76abbdbf7e9e5283018", 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 0.18s
[INFO] running `Command { std: "docker" "inspect" "58517abfbe903ac7fd397587aab8c121206270246e03e76abbdbf7e9e5283018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58517abfbe903ac7fd397587aab8c121206270246e03e76abbdbf7e9e5283018", kill_on_drop: false }`
[INFO] [stdout] 58517abfbe903ac7fd397587aab8c121206270246e03e76abbdbf7e9e5283018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb2dc47a3d2744775124f8db4dfedb98cf3158815186b73d548245270b308f8d
[INFO] running `Command { std: "docker" "start" "-a" "cb2dc47a3d2744775124f8db4dfedb98cf3158815186b73d548245270b308f8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling predicates-core v1.0.9
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[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 serde v1.0.228
[INFO] [stderr]    Compiling downcast v0.11.0
[INFO] [stderr]    Compiling fragile v2.0.1
[INFO] [stderr]    Compiling similar v2.7.0
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling predicates-tree v1.0.12
[INFO] [stderr]    Compiling predicates v2.1.5
[INFO] [stderr]    Compiling assert-json-diff v2.0.2
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling mockito v0.31.1
[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 10.60s
[INFO] running `Command { std: "docker" "inspect" "cb2dc47a3d2744775124f8db4dfedb98cf3158815186b73d548245270b308f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb2dc47a3d2744775124f8db4dfedb98cf3158815186b73d548245270b308f8d", kill_on_drop: false }`
[INFO] [stdout] cb2dc47a3d2744775124f8db4dfedb98cf3158815186b73d548245270b308f8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e465514071c0ea86e8c4a74249877cc60555462e40f5e6283b07c9630d3d48bf
[INFO] running `Command { std: "docker" "start" "-a" "e465514071c0ea86e8c4a74249877cc60555462e40f5e6283b07c9630d3d48bf", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tf_observer-d0b470716401df9a)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test::observable_multi_observer ... ok
[INFO] [stdout] test test::observer_list_attach_detach ... ok
[INFO] [stdout] test test::observer_list_notify ... ok
[INFO] [stdout] test test::observer_list_test_clone ... ok
[INFO] [stdout] test test::observer_list_test_clone_pre_attach ... ok
[INFO] [stdout] test test::observer_list_test_drop_inactive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tf_observer
[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" "e465514071c0ea86e8c4a74249877cc60555462e40f5e6283b07c9630d3d48bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e465514071c0ea86e8c4a74249877cc60555462e40f5e6283b07c9630d3d48bf", kill_on_drop: false }`
[INFO] [stdout] e465514071c0ea86e8c4a74249877cc60555462e40f5e6283b07c9630d3d48bf