[INFO] fetching crate guard_let 0.1.2...
[INFO] checking guard_let-0.1.2 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate guard_let 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate guard_let 0.1.2 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate guard_let 0.1.2
[INFO] finished tweaking crates.io crate guard_let 0.1.2
[INFO] tweaked toml for crates.io crate guard_let 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 765f49e6be5ec6c965478d3201d1eb9ebbc0184e28efec3fe9dac8bcae8eaeda
[INFO] running `Command { std: "docker" "start" "-a" "765f49e6be5ec6c965478d3201d1eb9ebbc0184e28efec3fe9dac8bcae8eaeda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "765f49e6be5ec6c965478d3201d1eb9ebbc0184e28efec3fe9dac8bcae8eaeda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "765f49e6be5ec6c965478d3201d1eb9ebbc0184e28efec3fe9dac8bcae8eaeda", kill_on_drop: false }`
[INFO] [stdout] 765f49e6be5ec6c965478d3201d1eb9ebbc0184e28efec3fe9dac8bcae8eaeda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 088d15deeb7eafce811adcd32d00f919214733f8f3bd29b8b3e09765e7d69999
[INFO] running `Command { std: "docker" "start" "-a" "088d15deeb7eafce811adcd32d00f919214733f8f3bd29b8b3e09765e7d69999", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking quote v1.0.33
[INFO] [stderr]     Checking pmutil v0.5.3
[INFO] [stderr]     Checking guard_let v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `Enum` doesn't implement `Debug`
[INFO] [stdout]   --> tests/usage.rs:21:38
[INFO] [stdout]    |
[INFO] [stdout] 21 |         println!("v is not A: {:?}", v);
[INFO] [stdout]    |                                      ^ `Enum` cannot be formatted using `{:?}`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Debug` is not implemented for `Enum`
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `Enum` or manually `impl Debug for Enum`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Enum` doesn't implement `Debug`
[INFO] [stdout]   --> tests/usage.rs:35:38
[INFO] [stdout]    |
[INFO] [stdout] 35 |         println!("v is not C: {:?}", v);
[INFO] [stdout]    |                                      ^ `Enum` cannot be formatted using `{:?}`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Debug` is not implemented for `Enum`
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `Enum` or manually `impl Debug for Enum`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `guard_let` (test "usage") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "088d15deeb7eafce811adcd32d00f919214733f8f3bd29b8b3e09765e7d69999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "088d15deeb7eafce811adcd32d00f919214733f8f3bd29b8b3e09765e7d69999", kill_on_drop: false }`
[INFO] [stdout] 088d15deeb7eafce811adcd32d00f919214733f8f3bd29b8b3e09765e7d69999
