[INFO] fetching crate if_empty 0.3.0...
[INFO] testing if_empty-0.3.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate if_empty 0.3.0 into /workspace/builds/worker-47/source
[INFO] validating manifest of crates.io crate if_empty 0.3.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate if_empty 0.3.0
[INFO] finished tweaking crates.io crate if_empty 0.3.0
[INFO] tweaked toml for crates.io crate if_empty 0.3.0 written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate crates.io crate if_empty 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 797410250f0bf18f1bae9055bd28cceed782aaf3cd1b6ad30ca65fdc7f97c894
[INFO] running `Command { std: "docker" "start" "-a" "797410250f0bf18f1bae9055bd28cceed782aaf3cd1b6ad30ca65fdc7f97c894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "797410250f0bf18f1bae9055bd28cceed782aaf3cd1b6ad30ca65fdc7f97c894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "797410250f0bf18f1bae9055bd28cceed782aaf3cd1b6ad30ca65fdc7f97c894", kill_on_drop: false }`
[INFO] [stdout] 797410250f0bf18f1bae9055bd28cceed782aaf3cd1b6ad30ca65fdc7f97c894
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf1172223f2d4051df6186c888866fac430df245b28f32407b53dfc540c36d5a
[INFO] running `Command { std: "docker" "start" "-a" "bf1172223f2d4051df6186c888866fac430df245b28f32407b53dfc540c36d5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling if_empty_derive v0.1.0
[INFO] [stderr]    Compiling if_empty v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.57s
[INFO] running `Command { std: "docker" "inspect" "bf1172223f2d4051df6186c888866fac430df245b28f32407b53dfc540c36d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf1172223f2d4051df6186c888866fac430df245b28f32407b53dfc540c36d5a", kill_on_drop: false }`
[INFO] [stdout] bf1172223f2d4051df6186c888866fac430df245b28f32407b53dfc540c36d5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20f542ed0d218b5d03a41b78f8aee9e2a64c0cfca82bad7fd69c2ac846eba9dd
[INFO] running `Command { std: "docker" "start" "-a" "20f542ed0d218b5d03a41b78f8aee9e2a64c0cfca82bad7fd69c2ac846eba9dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling if_empty v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "20f542ed0d218b5d03a41b78f8aee9e2a64c0cfca82bad7fd69c2ac846eba9dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f542ed0d218b5d03a41b78f8aee9e2a64c0cfca82bad7fd69c2ac846eba9dd", kill_on_drop: false }`
[INFO] [stdout] 20f542ed0d218b5d03a41b78f8aee9e2a64c0cfca82bad7fd69c2ac846eba9dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9356c8a73fb74aea2449a8ba7dfbb6d96af218ec0dab4db6faf1cfa5dac2226b
[INFO] running `Command { std: "docker" "start" "-a" "9356c8a73fb74aea2449a8ba7dfbb6d96af218ec0dab4db6faf1cfa5dac2226b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/if_empty-da151b9704009711)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::custom ... ok
[INFO] [stdout] test tests::derive_macro ... ok
[INFO] [stdout] test tests::os_str ... ok
[INFO] [stdout] test tests::os_string ... ok
[INFO] [stdout] test tests::str ... ok
[INFO] [stdout] test tests::string ... 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 if_empty
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] test src/lib.rs - (line 59) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9356c8a73fb74aea2449a8ba7dfbb6d96af218ec0dab4db6faf1cfa5dac2226b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9356c8a73fb74aea2449a8ba7dfbb6d96af218ec0dab4db6faf1cfa5dac2226b", kill_on_drop: false }`
[INFO] [stdout] 9356c8a73fb74aea2449a8ba7dfbb6d96af218ec0dab4db6faf1cfa5dac2226b