[INFO] fetching crate machine_int 0.1.4...
[INFO] testing machine_int-0.1.4 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate machine_int 0.1.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate machine_int 0.1.4 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61898794898f440bb22b5c3a887ef77be9cd863e8e11ecfe3c2178326c697dd8
[INFO] running `Command { std: "docker" "start" "-a" "61898794898f440bb22b5c3a887ef77be9cd863e8e11ecfe3c2178326c697dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61898794898f440bb22b5c3a887ef77be9cd863e8e11ecfe3c2178326c697dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61898794898f440bb22b5c3a887ef77be9cd863e8e11ecfe3c2178326c697dd8", kill_on_drop: false }`
[INFO] [stdout] 61898794898f440bb22b5c3a887ef77be9cd863e8e11ecfe3c2178326c697dd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7598d5467bc1c0873b1557cd1e1ae159fdec117ccb134712861533a9b3dc82d4
[INFO] running `Command { std: "docker" "start" "-a" "7598d5467bc1c0873b1557cd1e1ae159fdec117ccb134712861533a9b3dc82d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling machine_int v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "7598d5467bc1c0873b1557cd1e1ae159fdec117ccb134712861533a9b3dc82d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7598d5467bc1c0873b1557cd1e1ae159fdec117ccb134712861533a9b3dc82d4", kill_on_drop: false }`
[INFO] [stdout] 7598d5467bc1c0873b1557cd1e1ae159fdec117ccb134712861533a9b3dc82d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f97437bc050318e5362aa42b6a127c77776a34fe9cf9bd718c3dd13a5143c4b2
[INFO] running `Command { std: "docker" "start" "-a" "f97437bc050318e5362aa42b6a127c77776a34fe9cf9bd718c3dd13a5143c4b2", 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 1.17s
[INFO] running `Command { std: "docker" "inspect" "f97437bc050318e5362aa42b6a127c77776a34fe9cf9bd718c3dd13a5143c4b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f97437bc050318e5362aa42b6a127c77776a34fe9cf9bd718c3dd13a5143c4b2", kill_on_drop: false }`
[INFO] [stdout] f97437bc050318e5362aa42b6a127c77776a34fe9cf9bd718c3dd13a5143c4b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9cb9157e451963b7d5e2a4a36f6b377870b5b53484cbc1cb578330f2fa768877
[INFO] running `Command { std: "docker" "start" "-a" "9cb9157e451963b7d5e2a4a36f6b377870b5b53484cbc1cb578330f2fa768877", kill_on_drop: false }`
[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 0.00s
[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" "9cb9157e451963b7d5e2a4a36f6b377870b5b53484cbc1cb578330f2fa768877", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cb9157e451963b7d5e2a4a36f6b377870b5b53484cbc1cb578330f2fa768877", kill_on_drop: false }`
[INFO] [stdout] 9cb9157e451963b7d5e2a4a36f6b377870b5b53484cbc1cb578330f2fa768877