[INFO] fetching crate show-simplex 0.9.0...
[INFO] testing show-simplex-0.9.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate show-simplex 0.9.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate show-simplex 0.9.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate show-simplex 0.9.0
[INFO] finished tweaking crates.io crate show-simplex 0.9.0
[INFO] tweaked toml for crates.io crate show-simplex 0.9.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate show-simplex 0.9.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddcd87814b475d8eb3b6fc2ca83c1e2c49f44e5ee49a7f063a5c37f4a3581442
[INFO] running `Command { std: "docker" "start" "-a" "ddcd87814b475d8eb3b6fc2ca83c1e2c49f44e5ee49a7f063a5c37f4a3581442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddcd87814b475d8eb3b6fc2ca83c1e2c49f44e5ee49a7f063a5c37f4a3581442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddcd87814b475d8eb3b6fc2ca83c1e2c49f44e5ee49a7f063a5c37f4a3581442", kill_on_drop: false }`
[INFO] [stdout] ddcd87814b475d8eb3b6fc2ca83c1e2c49f44e5ee49a7f063a5c37f4a3581442
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcf93746b6fba24de5b71235d60e2a6a4df31c2bb2f6609776728531bf76ae1f
[INFO] running `Command { std: "docker" "start" "-a" "fcf93746b6fba24de5b71235d60e2a6a4df31c2bb2f6609776728531bf76ae1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling color_quant v1.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling schedule_recv v0.1.0
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling terminal_size v0.1.13
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]    Compiling noise v0.5.1
[INFO] [stderr]    Compiling structopt v0.3.15
[INFO] [stderr]    Compiling show-simplex v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 84  | /     loop {
[INFO] [stdout] 85  | |         tick.recv().unwrap();
[INFO] [stdout] 86  | |         print!("{}[2J", 27 as char);
[INFO] [stdout] 87  | |
[INFO] [stdout] ...   |
[INFO] [stdout] 103 | |         }
[INFO] [stdout] 104 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 105 | 
[INFO] [stdout] 106 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_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 26.32s
[INFO] running `Command { std: "docker" "inspect" "fcf93746b6fba24de5b71235d60e2a6a4df31c2bb2f6609776728531bf76ae1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcf93746b6fba24de5b71235d60e2a6a4df31c2bb2f6609776728531bf76ae1f", kill_on_drop: false }`
[INFO] [stdout] fcf93746b6fba24de5b71235d60e2a6a4df31c2bb2f6609776728531bf76ae1f
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6aa3413aa7a6e57b3f4d646774dd2f61d8a2da9b053b8ac766de39e1987cfbb7
[INFO] running `Command { std: "docker" "start" "-a" "6aa3413aa7a6e57b3f4d646774dd2f61d8a2da9b053b8ac766de39e1987cfbb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling show-simplex v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 84  | /     loop {
[INFO] [stdout] 85  | |         tick.recv().unwrap();
[INFO] [stdout] 86  | |         print!("{}[2J", 27 as char);
[INFO] [stdout] 87  | |
[INFO] [stdout] ...   |
[INFO] [stdout] 103 | |         }
[INFO] [stdout] 104 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 105 | 
[INFO] [stdout] 106 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_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 0.87s
[INFO] running `Command { std: "docker" "inspect" "6aa3413aa7a6e57b3f4d646774dd2f61d8a2da9b053b8ac766de39e1987cfbb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aa3413aa7a6e57b3f4d646774dd2f61d8a2da9b053b8ac766de39e1987cfbb7", kill_on_drop: false }`
[INFO] [stdout] 6aa3413aa7a6e57b3f4d646774dd2f61d8a2da9b053b8ac766de39e1987cfbb7
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 475bda5e675bd8039d94d029802162410bcb3f9b870b676476cc8ac35a45bcfe
[INFO] running `Command { std: "docker" "start" "-a" "475bda5e675bd8039d94d029802162410bcb3f9b870b676476cc8ac35a45bcfe", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 84  | /     loop {
[INFO] [stderr] 85  | |         tick.recv().unwrap();
[INFO] [stderr] 86  | |         print!("{}[2J", 27 as char);
[INFO] [stderr] 87  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 103 | |         }
[INFO] [stderr] 104 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 105 | 
[INFO] [stderr] 106 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `show-simplex` (bin "show-simplex" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/show_simplex-c304ee32013568b1)
[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" "475bda5e675bd8039d94d029802162410bcb3f9b870b676476cc8ac35a45bcfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "475bda5e675bd8039d94d029802162410bcb3f9b870b676476cc8ac35a45bcfe", kill_on_drop: false }`
[INFO] [stdout] 475bda5e675bd8039d94d029802162410bcb3f9b870b676476cc8ac35a45bcfe