[INFO] fetching crate slingr 0.1.0...
[INFO] testing slingr-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate slingr 0.1.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate slingr 0.1.0 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 slingr 0.1.0
[INFO] finished tweaking crates.io crate slingr 0.1.0
[INFO] tweaked toml for crates.io crate slingr 0.1.0 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] a8111f3cc18fbac885e889fd80d44e8a57a109334f60bf34845f827d0c97984a
[INFO] running `Command { std: "docker" "start" "-a" "a8111f3cc18fbac885e889fd80d44e8a57a109334f60bf34845f827d0c97984a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8111f3cc18fbac885e889fd80d44e8a57a109334f60bf34845f827d0c97984a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8111f3cc18fbac885e889fd80d44e8a57a109334f60bf34845f827d0c97984a", kill_on_drop: false }`
[INFO] [stdout] a8111f3cc18fbac885e889fd80d44e8a57a109334f60bf34845f827d0c97984a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] [stdout] 5d9d9b546519cebbdaa899db3137d102fe3a9b1fb1359a6b4bf94dcd1de2e8b8
[INFO] running `Command { std: "docker" "start" "-a" "5d9d9b546519cebbdaa899db3137d102fe3a9b1fb1359a6b4bf94dcd1de2e8b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling slingr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `new_termios`
[INFO] [stdout]  --> src/cli.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     new_termios: Termios,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.51s
[INFO] running `Command { std: "docker" "inspect" "5d9d9b546519cebbdaa899db3137d102fe3a9b1fb1359a6b4bf94dcd1de2e8b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d9d9b546519cebbdaa899db3137d102fe3a9b1fb1359a6b4bf94dcd1de2e8b8", kill_on_drop: false }`
[INFO] [stdout] 5d9d9b546519cebbdaa899db3137d102fe3a9b1fb1359a6b4bf94dcd1de2e8b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] [stdout] 9aa369b7734a24db16e404c039ec5a9bb45e3ea7ab9c4c1e498ebc42a70502be
[INFO] running `Command { std: "docker" "start" "-a" "9aa369b7734a24db16e404c039ec5a9bb45e3ea7ab9c4c1e498ebc42a70502be", kill_on_drop: false }`
[INFO] [stderr]    Compiling slingr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `new_termios`
[INFO] [stdout]  --> src/cli.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     new_termios: Termios,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "9aa369b7734a24db16e404c039ec5a9bb45e3ea7ab9c4c1e498ebc42a70502be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aa369b7734a24db16e404c039ec5a9bb45e3ea7ab9c4c1e498ebc42a70502be", kill_on_drop: false }`
[INFO] [stdout] 9aa369b7734a24db16e404c039ec5a9bb45e3ea7ab9c4c1e498ebc42a70502be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] [stdout] 3de15ddcc689f7eb6a4103d692d4cc318f9db8c5844647a1156fb3371fb8edbe
[INFO] running `Command { std: "docker" "start" "-a" "3de15ddcc689f7eb6a4103d692d4cc318f9db8c5844647a1156fb3371fb8edbe", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `new_termios`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/cli.rs:9:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 9 |     new_termios: Termios,
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `slingr` (bin "slingr" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slingr-fa171e3c03b9fc72)
[INFO] running `Command { std: "docker" "inspect" "3de15ddcc689f7eb6a4103d692d4cc318f9db8c5844647a1156fb3371fb8edbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3de15ddcc689f7eb6a4103d692d4cc318f9db8c5844647a1156fb3371fb8edbe", kill_on_drop: false }`
[INFO] [stdout] 3de15ddcc689f7eb6a4103d692d4cc318f9db8c5844647a1156fb3371fb8edbe