[INFO] fetching crate tf_observer 0.1.1...
[INFO] testing tf_observer-0.1.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate tf_observer 0.1.1 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate tf_observer 0.1.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tf_observer 0.1.1
[INFO] finished tweaking crates.io crate tf_observer 0.1.1
[INFO] tweaked toml for crates.io crate tf_observer 0.1.1 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termtree v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb4a5132722fb86c609b6e015bef9ff0767711f7df2dec9a497f1df4bfd11ac6
[INFO] running `Command { std: "docker" "start" "-a" "eb4a5132722fb86c609b6e015bef9ff0767711f7df2dec9a497f1df4bfd11ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb4a5132722fb86c609b6e015bef9ff0767711f7df2dec9a497f1df4bfd11ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4a5132722fb86c609b6e015bef9ff0767711f7df2dec9a497f1df4bfd11ac6", kill_on_drop: false }`
[INFO] [stdout] eb4a5132722fb86c609b6e015bef9ff0767711f7df2dec9a497f1df4bfd11ac6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d703570c24d6992ebafa256f773fe8cc9f16c6626ef8a51e0c184f1ef483002b
[INFO] running `Command { std: "docker" "start" "-a" "d703570c24d6992ebafa256f773fe8cc9f16c6626ef8a51e0c184f1ef483002b", kill_on_drop: false }`
[INFO] [stderr]    Compiling tf_observer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "d703570c24d6992ebafa256f773fe8cc9f16c6626ef8a51e0c184f1ef483002b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d703570c24d6992ebafa256f773fe8cc9f16c6626ef8a51e0c184f1ef483002b", kill_on_drop: false }`
[INFO] [stdout] d703570c24d6992ebafa256f773fe8cc9f16c6626ef8a51e0c184f1ef483002b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f326dc37caaae0563d5043ab140eadb500542fdc973e89d5235e74770631d451
[INFO] running `Command { std: "docker" "start" "-a" "f326dc37caaae0563d5043ab140eadb500542fdc973e89d5235e74770631d451", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling termtree v0.2.3
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling fragile v1.0.0
[INFO] [stderr]    Compiling downcast v0.10.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling predicates-tree v1.0.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling assert-json-diff v2.0.1
[INFO] [stderr]    Compiling mockito v0.30.0
[INFO] [stderr]    Compiling mockall_derive v0.10.2
[INFO] [stderr]    Compiling mockall v0.10.2
[INFO] [stderr]    Compiling tf_observer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.18s
[INFO] running `Command { std: "docker" "inspect" "f326dc37caaae0563d5043ab140eadb500542fdc973e89d5235e74770631d451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f326dc37caaae0563d5043ab140eadb500542fdc973e89d5235e74770631d451", kill_on_drop: false }`
[INFO] [stdout] f326dc37caaae0563d5043ab140eadb500542fdc973e89d5235e74770631d451
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3d8d8c7b32628fb3c321e87f0f946122c7125577a07c86f75907afdfebc6d860
[INFO] running `Command { std: "docker" "start" "-a" "3d8d8c7b32628fb3c321e87f0f946122c7125577a07c86f75907afdfebc6d860", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tf_observer-45f050d807df068b)
[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_drop_inactive ... ok
[INFO] [stdout] test test::observer_list_test_clone_pre_attach ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[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" "3d8d8c7b32628fb3c321e87f0f946122c7125577a07c86f75907afdfebc6d860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d8d8c7b32628fb3c321e87f0f946122c7125577a07c86f75907afdfebc6d860", kill_on_drop: false }`
[INFO] [stdout] 3d8d8c7b32628fb3c321e87f0f946122c7125577a07c86f75907afdfebc6d860