[INFO] fetching crate maildir 0.5.0...
[INFO] testing maildir-0.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate maildir 0.5.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate maildir 0.5.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maildir 0.5.0
[INFO] finished tweaking crates.io crate maildir 0.5.0
[INFO] tweaked toml for crates.io crate maildir 0.5.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate maildir 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd86e2451c030be6369fc5f1303f1f6e71b42ab28b830469bced3f084be95b27
[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" "dd86e2451c030be6369fc5f1303f1f6e71b42ab28b830469bced3f084be95b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd86e2451c030be6369fc5f1303f1f6e71b42ab28b830469bced3f084be95b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd86e2451c030be6369fc5f1303f1f6e71b42ab28b830469bced3f084be95b27", kill_on_drop: false }`
[INFO] [stdout] dd86e2451c030be6369fc5f1303f1f6e71b42ab28b830469bced3f084be95b27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.55.0" "build" "--frozen" "--message-format=json", 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] e98f2818087c6963d67c5a91653f974eb6a5ef7574d33b973994a9355e7855a2
[INFO] running `Command { std: "docker" "start" "-a" "e98f2818087c6963d67c5a91653f974eb6a5ef7574d33b973994a9355e7855a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling quoted_printable v0.4.2
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling encoding_rs v0.8.20
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling charset v0.1.2
[INFO] [stderr]    Compiling mailparse v0.13.1
[INFO] [stderr]    Compiling maildir v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.88s
[INFO] running `Command { std: "docker" "inspect" "e98f2818087c6963d67c5a91653f974eb6a5ef7574d33b973994a9355e7855a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e98f2818087c6963d67c5a91653f974eb6a5ef7574d33b973994a9355e7855a2", kill_on_drop: false }`
[INFO] [stdout] e98f2818087c6963d67c5a91653f974eb6a5ef7574d33b973994a9355e7855a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 84781663f52d7e58b7f44fdd3b2b0b7d1d4037df30b1e5d6f052756be0567c82
[INFO] running `Command { std: "docker" "start" "-a" "84781663f52d7e58b7f44fdd3b2b0b7d1d4037df30b1e5d6f052756be0567c82", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling maildir v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `Command { std: "docker" "inspect" "84781663f52d7e58b7f44fdd3b2b0b7d1d4037df30b1e5d6f052756be0567c82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84781663f52d7e58b7f44fdd3b2b0b7d1d4037df30b1e5d6f052756be0567c82", kill_on_drop: false }`
[INFO] [stdout] 84781663f52d7e58b7f44fdd3b2b0b7d1d4037df30b1e5d6f052756be0567c82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.55.0" "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] b5050b0f33960d2139e99293930c7e15028ad939e71fbe8368be438b2f93af68
[INFO] running `Command { std: "docker" "start" "-a" "b5050b0f33960d2139e99293930c7e15028ad939e71fbe8368be438b2f93af68", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/maildir-9964ec8029229753)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/smoke.rs (/opt/rustwide/target/debug/deps/smoke-1e81f2a5996dd84f)
[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 10 tests
[INFO] [stdout] test maildir_count ... ok
[INFO] [stdout] test maildir_find ... ok
[INFO] [stdout] test mark_read ... ok
[INFO] [stdout] test check_delete ... ok
[INFO] [stdout] test maildir_list ... ok
[INFO] [stdout] test check_create_dirs ... ok
[INFO] [stdout] test check_received ... ok
[INFO] [stdout] test check_store_new ... ok
[INFO] [stderr]    Doc-tests maildir
[INFO] [stdout] test check_store_cur ... ok
[INFO] [stdout] test check_flag_fiddling ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[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" "b5050b0f33960d2139e99293930c7e15028ad939e71fbe8368be438b2f93af68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5050b0f33960d2139e99293930c7e15028ad939e71fbe8368be438b2f93af68", kill_on_drop: false }`
[INFO] [stdout] b5050b0f33960d2139e99293930c7e15028ad939e71fbe8368be438b2f93af68