[INFO] fetching crate machine_int 0.1.4...
[INFO] testing machine_int-0.1.4 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate machine_int 0.1.4 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate machine_int 0.1.4 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate machine_int 0.1.4
[INFO] finished tweaking crates.io crate machine_int 0.1.4
[INFO] tweaked toml for crates.io crate machine_int 0.1.4 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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" "+722e1797249a965b6335aebd65d777f917e498f1" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7043a8056346592826fdf4cd604433ddf4bfb6d6391eb2af4f56dfa97b0e629
[INFO] running `Command { std: "docker" "start" "-a" "b7043a8056346592826fdf4cd604433ddf4bfb6d6391eb2af4f56dfa97b0e629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7043a8056346592826fdf4cd604433ddf4bfb6d6391eb2af4f56dfa97b0e629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7043a8056346592826fdf4cd604433ddf4bfb6d6391eb2af4f56dfa97b0e629", kill_on_drop: false }`
[INFO] [stdout] b7043a8056346592826fdf4cd604433ddf4bfb6d6391eb2af4f56dfa97b0e629
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4824a6d38ba977b69fef315df2baef5a890dbf62b7c79e22b4824873cd8668a9
[INFO] running `Command { std: "docker" "start" "-a" "4824a6d38ba977b69fef315df2baef5a890dbf62b7c79e22b4824873cd8668a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling machine_int v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "4824a6d38ba977b69fef315df2baef5a890dbf62b7c79e22b4824873cd8668a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4824a6d38ba977b69fef315df2baef5a890dbf62b7c79e22b4824873cd8668a9", kill_on_drop: false }`
[INFO] [stdout] 4824a6d38ba977b69fef315df2baef5a890dbf62b7c79e22b4824873cd8668a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3106c55b9505ae50048374ca72fcce69ea9feb9ba2ba0663f5a1d83b15b77fc
[INFO] running `Command { std: "docker" "start" "-a" "e3106c55b9505ae50048374ca72fcce69ea9feb9ba2ba0663f5a1d83b15b77fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling machine_int v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:242:5
[INFO] [stdout]     |
[INFO] [stdout] 242 |     usize::from(mu8);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:243:5
[INFO] [stdout]     |
[INFO] [stdout] 243 |     isize::from(mi8);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:244:5
[INFO] [stdout]     |
[INFO] [stdout] 244 |     usize::from(mu16);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     isize::from(mi16);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 |     usize::from(mu32);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:247:5
[INFO] [stdout]     |
[INFO] [stdout] 247 |     isize::from(mi32);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:248:5
[INFO] [stdout]     |
[INFO] [stdout] 248 |     usize::from(mu64);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> tests/should_compile.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 249 |     isize::from(mi64);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "e3106c55b9505ae50048374ca72fcce69ea9feb9ba2ba0663f5a1d83b15b77fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3106c55b9505ae50048374ca72fcce69ea9feb9ba2ba0663f5a1d83b15b77fc", kill_on_drop: false }`
[INFO] [stdout] e3106c55b9505ae50048374ca72fcce69ea9feb9ba2ba0663f5a1d83b15b77fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c30ea0f7b570817dc494385c9db727141651e2149ff0013aa542e5e0a548c0fa
[INFO] running `Command { std: "docker" "start" "-a" "c30ea0f7b570817dc494385c9db727141651e2149ff0013aa542e5e0a548c0fa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     usize::from(mu8);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:243:5
[INFO] [stderr]     |
[INFO] [stderr] 243 |     isize::from(mi8);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:244:5
[INFO] [stderr]     |
[INFO] [stderr] 244 |     usize::from(mu16);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:245:5
[INFO] [stderr]     |
[INFO] [stderr] 245 |     isize::from(mi16);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:246:5
[INFO] [stderr]     |
[INFO] [stderr] 246 |     usize::from(mu32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     isize::from(mi32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:248:5
[INFO] [stderr]     |
[INFO] [stderr] 248 |     usize::from(mu64);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> tests/should_compile.rs:249:5
[INFO] [stderr]     |
[INFO] [stderr] 249 |     isize::from(mi64);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `machine_int` (test "should_compile") generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/machine_int-0e7489caf76971e5)
[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] [stderr]      Running tests/should_compile.rs (/opt/rustwide/target/debug/deps/should_compile-468e7e0c9e3bca72)
[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] [stderr]    Doc-tests machine_int
[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" "c30ea0f7b570817dc494385c9db727141651e2149ff0013aa542e5e0a548c0fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c30ea0f7b570817dc494385c9db727141651e2149ff0013aa542e5e0a548c0fa", kill_on_drop: false }`
[INFO] [stdout] c30ea0f7b570817dc494385c9db727141651e2149ff0013aa542e5e0a548c0fa