[INFO] fetching crate guard_let 0.1.2...
[INFO] testing guard_let-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate guard_let 0.1.2 into /workspace/builds/worker-6-tc1/source
[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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate guard_let 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding pmutil v0.5.3 (available: v0.6.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.110)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff822edafba4ef684d2f5da989458f0b60f9522063519ee5fb893398eec3b445
[INFO] running `Command { std: "docker" "start" "-a" "ff822edafba4ef684d2f5da989458f0b60f9522063519ee5fb893398eec3b445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff822edafba4ef684d2f5da989458f0b60f9522063519ee5fb893398eec3b445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff822edafba4ef684d2f5da989458f0b60f9522063519ee5fb893398eec3b445", kill_on_drop: false }`
[INFO] [stdout] ff822edafba4ef684d2f5da989458f0b60f9522063519ee5fb893398eec3b445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e92b3661432781ac30bbe79e1e0e15406252c488f707e9ebba3483323f034764
[INFO] running `Command { std: "docker" "start" "-a" "e92b3661432781ac30bbe79e1e0e15406252c488f707e9ebba3483323f034764", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling guard_let v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.92s
[INFO] running `Command { std: "docker" "inspect" "e92b3661432781ac30bbe79e1e0e15406252c488f707e9ebba3483323f034764", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92b3661432781ac30bbe79e1e0e15406252c488f707e9ebba3483323f034764", kill_on_drop: false }`
[INFO] [stdout] e92b3661432781ac30bbe79e1e0e15406252c488f707e9ebba3483323f034764
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 714b59dfdb6b9776fecacfa2eda3c414d6b1d67698fee8258d388b35250e83b9
[INFO] running `Command { std: "docker" "start" "-a" "714b59dfdb6b9776fecacfa2eda3c414d6b1d67698fee8258d388b35250e83b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling 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 `{:?}` because it doesn't implement `Debug`
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               required by this formatting parameter
[INFO] [stdout]    |
[INFO] [stdout] help: the trait `Debug` is not implemented for `Enum`
[INFO] [stdout]   --> tests/usage.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | enum Enum {
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `Enum` or manually `impl Debug for Enum`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Enum` doesn't implement `Debug`
[INFO] [stdout]   --> tests/usage.rs:35:38
[INFO] [stdout]    |
[INFO] [stdout] 35 |         println!("v is not C: {:?}", v);
[INFO] [stdout]    |                               ----   ^ `Enum` cannot be formatted using `{:?}` because it doesn't implement `Debug`
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               required by this formatting parameter
[INFO] [stdout]    |
[INFO] [stdout] help: the trait `Debug` is not implemented for `Enum`
[INFO] [stdout]   --> tests/usage.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | enum Enum {
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `Enum` or manually `impl Debug for Enum`
[INFO] [stdout]    = note: this error originates in the macro `$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] [stderr] error: could not compile `guard_let` (test "usage") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "714b59dfdb6b9776fecacfa2eda3c414d6b1d67698fee8258d388b35250e83b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714b59dfdb6b9776fecacfa2eda3c414d6b1d67698fee8258d388b35250e83b9", kill_on_drop: false }`
[INFO] [stdout] 714b59dfdb6b9776fecacfa2eda3c414d6b1d67698fee8258d388b35250e83b9