[INFO] fetching crate r4v 0.1.0...
[INFO] testing r4v-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate r4v 0.1.0 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate r4v 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate r4v 0.1.0
[INFO] finished tweaking crates.io crate r4v 0.1.0
[INFO] tweaked toml for crates.io crate r4v 0.1.0 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] crate crates.io crate r4v 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 954291b1a230e9b85eaf65df58ffb41a134a13ed7649952af5cd81580e43880d
[INFO] running `Command { std: "docker" "start" "-a" "954291b1a230e9b85eaf65df58ffb41a134a13ed7649952af5cd81580e43880d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "954291b1a230e9b85eaf65df58ffb41a134a13ed7649952af5cd81580e43880d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954291b1a230e9b85eaf65df58ffb41a134a13ed7649952af5cd81580e43880d", kill_on_drop: false }`
[INFO] [stdout] 954291b1a230e9b85eaf65df58ffb41a134a13ed7649952af5cd81580e43880d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a472b95a80fb3a59cf52d58108d288e2dba11b9e84ecb1e0e2509b3f686c351
[INFO] running `Command { std: "docker" "start" "-a" "3a472b95a80fb3a59cf52d58108d288e2dba11b9e84ecb1e0e2509b3f686c351", kill_on_drop: false }`
[INFO] [stderr]    Compiling r4v v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "3a472b95a80fb3a59cf52d58108d288e2dba11b9e84ecb1e0e2509b3f686c351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a472b95a80fb3a59cf52d58108d288e2dba11b9e84ecb1e0e2509b3f686c351", kill_on_drop: false }`
[INFO] [stdout] 3a472b95a80fb3a59cf52d58108d288e2dba11b9e84ecb1e0e2509b3f686c351
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3ca441bd1a36ba63e4d41dad3f6cff18856e5df967773df9d8ff234f8e1a4a4
[INFO] running `Command { std: "docker" "start" "-a" "a3ca441bd1a36ba63e4d41dad3f6cff18856e5df967773df9d8ff234f8e1a4a4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling r4v v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "a3ca441bd1a36ba63e4d41dad3f6cff18856e5df967773df9d8ff234f8e1a4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3ca441bd1a36ba63e4d41dad3f6cff18856e5df967773df9d8ff234f8e1a4a4", kill_on_drop: false }`
[INFO] [stdout] a3ca441bd1a36ba63e4d41dad3f6cff18856e5df967773df9d8ff234f8e1a4a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 90b0711ed0a20c66ee47010bbc23538adf37b7bfa67cd5c8fa9e2af026a69756
[INFO] running `Command { std: "docker" "start" "-a" "90b0711ed0a20c66ee47010bbc23538adf37b7bfa67cd5c8fa9e2af026a69756", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/r4v-6c657494a42f1e71)
[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" "90b0711ed0a20c66ee47010bbc23538adf37b7bfa67cd5c8fa9e2af026a69756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90b0711ed0a20c66ee47010bbc23538adf37b7bfa67cd5c8fa9e2af026a69756", kill_on_drop: false }`
[INFO] [stdout] 90b0711ed0a20c66ee47010bbc23538adf37b7bfa67cd5c8fa9e2af026a69756