[INFO] fetching crate fnum 0.0.1...
[INFO] checking fnum-0.0.1 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate fnum 0.0.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate fnum 0.0.1
[INFO] finished tweaking crates.io crate fnum 0.0.1
[INFO] tweaked toml for crates.io crate fnum 0.0.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fnum 0.0.1 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fnum 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fnum-derive v0.0.1
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 816b8dfd108411395f958d056ee499da039c929f0be0d678154fc5147e9f13d0
[INFO] running `Command { std: "docker" "start" "-a" "816b8dfd108411395f958d056ee499da039c929f0be0d678154fc5147e9f13d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "816b8dfd108411395f958d056ee499da039c929f0be0d678154fc5147e9f13d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "816b8dfd108411395f958d056ee499da039c929f0be0d678154fc5147e9f13d0", kill_on_drop: false }`
[INFO] [stdout] 816b8dfd108411395f958d056ee499da039c929f0be0d678154fc5147e9f13d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0997fd1d7549781172caf8439c374c5e9794cdbdebf3480ca7ee8c04f08ba0f2
[INFO] running `Command { std: "docker" "start" "-a" "0997fd1d7549781172caf8439c374c5e9794cdbdebf3480ca7ee8c04f08ba0f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling fnum-derive v0.0.1
[INFO] [stderr]     Checking fnum v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |             0 => Enum::A(std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 |             1 => Enum::B(std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 |             2 => Enum::C(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:29:73
[INFO] [stdout]    |
[INFO] [stdout] 29 |             2 => Enum::C(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                         |
[INFO] [stdout]    |                                                                         this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |             3 => Enum::D(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:30:73
[INFO] [stdout]    |
[INFO] [stdout] 30 |             3 => Enum::D(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                         |
[INFO] [stdout]    |                                                                         this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.47s
[INFO] running `Command { std: "docker" "inspect" "0997fd1d7549781172caf8439c374c5e9794cdbdebf3480ca7ee8c04f08ba0f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0997fd1d7549781172caf8439c374c5e9794cdbdebf3480ca7ee8c04f08ba0f2", kill_on_drop: false }`
[INFO] [stdout] 0997fd1d7549781172caf8439c374c5e9794cdbdebf3480ca7ee8c04f08ba0f2