[INFO] fetching crate iif 1.2.1...
[INFO] testing iif-1.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate iif 1.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate iif 1.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iif 1.2.1
[INFO] finished tweaking crates.io crate iif 1.2.1
[INFO] tweaked toml for crates.io crate iif 1.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2975b583c3adf29182e2ea89108924389420e4bab088835dc9f3090ea6db32c3
[INFO] running `Command { std: "docker" "start" "-a" "2975b583c3adf29182e2ea89108924389420e4bab088835dc9f3090ea6db32c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2975b583c3adf29182e2ea89108924389420e4bab088835dc9f3090ea6db32c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2975b583c3adf29182e2ea89108924389420e4bab088835dc9f3090ea6db32c3", kill_on_drop: false }`
[INFO] [stdout] 2975b583c3adf29182e2ea89108924389420e4bab088835dc9f3090ea6db32c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79446851e6f6e6d20c1c6dc696d34c3d49a8cc21ef511106d612896f6f1137b8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "79446851e6f6e6d20c1c6dc696d34c3d49a8cc21ef511106d612896f6f1137b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling iif v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "79446851e6f6e6d20c1c6dc696d34c3d49a8cc21ef511106d612896f6f1137b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79446851e6f6e6d20c1c6dc696d34c3d49a8cc21ef511106d612896f6f1137b8", kill_on_drop: false }`
[INFO] [stdout] 79446851e6f6e6d20c1c6dc696d34c3d49a8cc21ef511106d612896f6f1137b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ec4961bc0db3e97371a5c54aff20a77e07a059e2ee807807662becadd0c9cc4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4ec4961bc0db3e97371a5c54aff20a77e07a059e2ee807807662becadd0c9cc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling iif v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "4ec4961bc0db3e97371a5c54aff20a77e07a059e2ee807807662becadd0c9cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec4961bc0db3e97371a5c54aff20a77e07a059e2ee807807662becadd0c9cc4", kill_on_drop: false }`
[INFO] [stdout] 4ec4961bc0db3e97371a5c54aff20a77e07a059e2ee807807662becadd0c9cc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 61695a5ee79e7f5f473409c68c4745c1e7d48dfc8e214e244583988062c13dfd
[INFO] running `Command { std: "docker" "start" "-a" "61695a5ee79e7f5f473409c68c4745c1e7d48dfc8e214e244583988062c13dfd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iif-a36271e6246b7196)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iif
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - iif_opt (line 26) ... ok
[INFO] [stdout] test src/lib.rs - iif (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61695a5ee79e7f5f473409c68c4745c1e7d48dfc8e214e244583988062c13dfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61695a5ee79e7f5f473409c68c4745c1e7d48dfc8e214e244583988062c13dfd", kill_on_drop: false }`
[INFO] [stdout] 61695a5ee79e7f5f473409c68c4745c1e7d48dfc8e214e244583988062c13dfd