[INFO] fetching crate word-guesser 0.1.1...
[INFO] testing word-guesser-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate word-guesser 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate word-guesser 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 word-guesser 0.1.1
[INFO] finished tweaking crates.io crate word-guesser 0.1.1
[INFO] tweaked toml for crates.io crate word-guesser 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate word-guesser 0.1.1 already has a lockfile, it will not be regenerated
[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] ec619be14f5c9c51081c9c5744781bf2001621997eb3e7fe3733cbe78866ded3
[INFO] running `Command { std: "docker" "start" "-a" "ec619be14f5c9c51081c9c5744781bf2001621997eb3e7fe3733cbe78866ded3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec619be14f5c9c51081c9c5744781bf2001621997eb3e7fe3733cbe78866ded3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec619be14f5c9c51081c9c5744781bf2001621997eb3e7fe3733cbe78866ded3", kill_on_drop: false }`
[INFO] [stdout] ec619be14f5c9c51081c9c5744781bf2001621997eb3e7fe3733cbe78866ded3
[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] ea25ae25730b63d3d577ccb4c195fd90320d6088dc68651cc035ca9c119b88e7
[INFO] running `Command { std: "docker" "start" "-a" "ea25ae25730b63d3d577ccb4c195fd90320d6088dc68651cc035ca9c119b88e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling terminal_size v0.1.15
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling console v0.13.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling word-guesser v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.33s
[INFO] running `Command { std: "docker" "inspect" "ea25ae25730b63d3d577ccb4c195fd90320d6088dc68651cc035ca9c119b88e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea25ae25730b63d3d577ccb4c195fd90320d6088dc68651cc035ca9c119b88e7", kill_on_drop: false }`
[INFO] [stdout] ea25ae25730b63d3d577ccb4c195fd90320d6088dc68651cc035ca9c119b88e7
[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] ce259348a121672a8ad8d339556a27e5f8c468eb3585fda940f9598c85780b43
[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" "ce259348a121672a8ad8d339556a27e5f8c468eb3585fda940f9598c85780b43", kill_on_drop: false }`
[INFO] [stderr]    Compiling word-guesser v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "ce259348a121672a8ad8d339556a27e5f8c468eb3585fda940f9598c85780b43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce259348a121672a8ad8d339556a27e5f8c468eb3585fda940f9598c85780b43", kill_on_drop: false }`
[INFO] [stdout] ce259348a121672a8ad8d339556a27e5f8c468eb3585fda940f9598c85780b43
[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] [stdout] 96350dc51b4ec10213bd6124cbee8643b1141bcb35e9266d7f6cdeddbce1d61d
[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" "96350dc51b4ec10213bd6124cbee8643b1141bcb35e9266d7f6cdeddbce1d61d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/word_guesser-e11a792a23d60f85
[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" "96350dc51b4ec10213bd6124cbee8643b1141bcb35e9266d7f6cdeddbce1d61d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96350dc51b4ec10213bd6124cbee8643b1141bcb35e9266d7f6cdeddbce1d61d", kill_on_drop: false }`
[INFO] [stdout] 96350dc51b4ec10213bd6124cbee8643b1141bcb35e9266d7f6cdeddbce1d61d