[INFO] fetching crate easy_io 0.3.0...
[INFO] testing easy_io-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate easy_io 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate easy_io 0.3.0 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 easy_io 0.3.0
[INFO] finished tweaking crates.io crate easy_io 0.3.0
[INFO] tweaked toml for crates.io crate easy_io 0.3.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4e77ba6418a7b2f4ad72615a6c561ae626d6afffda071b03b1453cc5515b6213
[INFO] running `Command { std: "docker" "start" "-a" "4e77ba6418a7b2f4ad72615a6c561ae626d6afffda071b03b1453cc5515b6213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e77ba6418a7b2f4ad72615a6c561ae626d6afffda071b03b1453cc5515b6213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e77ba6418a7b2f4ad72615a6c561ae626d6afffda071b03b1453cc5515b6213", kill_on_drop: false }`
[INFO] [stdout] 4e77ba6418a7b2f4ad72615a6c561ae626d6afffda071b03b1453cc5515b6213
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05db1c691389cfa2c195c7853b9f5d7a8867a2f16f8f94a3a3d1a7b6a11d6a91
[INFO] running `Command { std: "docker" "start" "-a" "05db1c691389cfa2c195c7853b9f5d7a8867a2f16f8f94a3a3d1a7b6a11d6a91", kill_on_drop: false }`
[INFO] [stderr]    Compiling easy_io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "05db1c691389cfa2c195c7853b9f5d7a8867a2f16f8f94a3a3d1a7b6a11d6a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05db1c691389cfa2c195c7853b9f5d7a8867a2f16f8f94a3a3d1a7b6a11d6a91", kill_on_drop: false }`
[INFO] [stdout] 05db1c691389cfa2c195c7853b9f5d7a8867a2f16f8f94a3a3d1a7b6a11d6a91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] e3afc52ccbc33c856146dbe4726c3b6596ff76b6dbb2289ef334dbdeab70a837
[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" "e3afc52ccbc33c856146dbe4726c3b6596ff76b6dbb2289ef334dbdeab70a837", kill_on_drop: false }`
[INFO] [stderr]    Compiling easy_io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "e3afc52ccbc33c856146dbe4726c3b6596ff76b6dbb2289ef334dbdeab70a837", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3afc52ccbc33c856146dbe4726c3b6596ff76b6dbb2289ef334dbdeab70a837", kill_on_drop: false }`
[INFO] [stdout] e3afc52ccbc33c856146dbe4726c3b6596ff76b6dbb2289ef334dbdeab70a837
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c9507508173f49564016a52a46e7ead7525103183a025385b1a331b92395e7ac
[INFO] running `Command { std: "docker" "start" "-a" "c9507508173f49564016a52a46e7ead7525103183a025385b1a331b92395e7ac", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/easy_io-107bb06bebacd790
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests easy_io
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c9507508173f49564016a52a46e7ead7525103183a025385b1a331b92395e7ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9507508173f49564016a52a46e7ead7525103183a025385b1a331b92395e7ac", kill_on_drop: false }`
[INFO] [stdout] c9507508173f49564016a52a46e7ead7525103183a025385b1a331b92395e7ac