[INFO] fetching crate iocuddle 0.1.1...
[INFO] testing iocuddle-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate iocuddle 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate iocuddle 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iocuddle 0.1.1
[INFO] finished tweaking crates.io crate iocuddle 0.1.1
[INFO] tweaked toml for crates.io crate iocuddle 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7656ed19a6bc6a97d2e29235b7ef14194759a54be26cd63d5ececc716e6e51a4
[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" "7656ed19a6bc6a97d2e29235b7ef14194759a54be26cd63d5ececc716e6e51a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7656ed19a6bc6a97d2e29235b7ef14194759a54be26cd63d5ececc716e6e51a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7656ed19a6bc6a97d2e29235b7ef14194759a54be26cd63d5ececc716e6e51a4", kill_on_drop: false }`
[INFO] [stdout] 7656ed19a6bc6a97d2e29235b7ef14194759a54be26cd63d5ececc716e6e51a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7e37abc032a8c043cb95958eb2acc1fdbc299462ef5fe7e159d39f0f97d8b47
[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" "c7e37abc032a8c043cb95958eb2acc1fdbc299462ef5fe7e159d39f0f97d8b47", kill_on_drop: false }`
[INFO] [stderr]    Compiling iocuddle v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "c7e37abc032a8c043cb95958eb2acc1fdbc299462ef5fe7e159d39f0f97d8b47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e37abc032a8c043cb95958eb2acc1fdbc299462ef5fe7e159d39f0f97d8b47", kill_on_drop: false }`
[INFO] [stdout] c7e37abc032a8c043cb95958eb2acc1fdbc299462ef5fe7e159d39f0f97d8b47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35d3c9edf2984902a6d613cd0d6850ace81438f74852c9c9454c166a3da6da09
[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" "35d3c9edf2984902a6d613cd0d6850ace81438f74852c9c9454c166a3da6da09", kill_on_drop: false }`
[INFO] [stderr]    Compiling iocuddle v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "35d3c9edf2984902a6d613cd0d6850ace81438f74852c9c9454c166a3da6da09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35d3c9edf2984902a6d613cd0d6850ace81438f74852c9c9454c166a3da6da09", kill_on_drop: false }`
[INFO] [stdout] 35d3c9edf2984902a6d613cd0d6850ace81438f74852c9c9454c166a3da6da09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 231889b61e93ac8d33a1b3d95a58779ecff59d07c421ed38e03ec9a619cbf03d
[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" "231889b61e93ac8d33a1b3d95a58779ecff59d07c421ed38e03ec9a619cbf03d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iocuddle-8f523999393c86cf
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::req_r ... ok
[INFO] [stderr]    Doc-tests iocuddle
[INFO] [stdout] test test::req_w ... ok
[INFO] [stdout] test test::req_wr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 119) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/lib.rs - (line 49) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "231889b61e93ac8d33a1b3d95a58779ecff59d07c421ed38e03ec9a619cbf03d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "231889b61e93ac8d33a1b3d95a58779ecff59d07c421ed38e03ec9a619cbf03d", kill_on_drop: false }`
[INFO] [stdout] 231889b61e93ac8d33a1b3d95a58779ecff59d07c421ed38e03ec9a619cbf03d