[INFO] fetching crate dbg 1.0.4...
[INFO] testing dbg-1.0.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate dbg 1.0.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate dbg 1.0.4 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dbg 1.0.4
[INFO] finished tweaking crates.io crate dbg 1.0.4
[INFO] tweaked toml for crates.io crate dbg 1.0.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ef79f708f92142b78623efb20b447e07adbca794a0fc462ae708a99b1618981
[INFO] running `Command { std: "docker" "start" "-a" "5ef79f708f92142b78623efb20b447e07adbca794a0fc462ae708a99b1618981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ef79f708f92142b78623efb20b447e07adbca794a0fc462ae708a99b1618981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ef79f708f92142b78623efb20b447e07adbca794a0fc462ae708a99b1618981", kill_on_drop: false }`
[INFO] [stdout] 5ef79f708f92142b78623efb20b447e07adbca794a0fc462ae708a99b1618981
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec0a2b5451618c17b8c4edb2c809e29322c3ada037043303dd97c2a71d1a7a57
[INFO] running `Command { std: "docker" "start" "-a" "ec0a2b5451618c17b8c4edb2c809e29322c3ada037043303dd97c2a71d1a7a57", kill_on_drop: false }`
[INFO] [stderr]    Compiling dbg v1.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "ec0a2b5451618c17b8c4edb2c809e29322c3ada037043303dd97c2a71d1a7a57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0a2b5451618c17b8c4edb2c809e29322c3ada037043303dd97c2a71d1a7a57", kill_on_drop: false }`
[INFO] [stdout] ec0a2b5451618c17b8c4edb2c809e29322c3ada037043303dd97c2a71d1a7a57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f81abe264f31f5e3e7d90c30bfc18e71166e4be44d09980141e63ec564c4dee3
[INFO] running `Command { std: "docker" "start" "-a" "f81abe264f31f5e3e7d90c30bfc18e71166e4be44d09980141e63ec564c4dee3", 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] [stderr]    Compiling dbg v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `X` doesn't implement `Debug`
[INFO] [stdout]    --> src/lib.rs:86:62
[INFO] [stdout]     |
[INFO] [stdout] 86  |                     (if detailed { write!(&mut err, "{:#?}", _tmp) }
[INFO] [stdout]     |                                                              ^^^^ `X` cannot be formatted using `{:?}`
[INFO] [stdout] ...
[INFO] [stdout] 270 |         dbg!(&a);
[INFO] [stdout]     |         --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Debug` is not implemented for `X`
[INFO] [stdout]     = note: add `#[derive(Debug)]` to `X` or manually `impl Debug for X`
[INFO] [stdout]     = note: this error originates in the macro `$crate::format_args` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `X` doesn't implement `Debug`
[INFO] [stdout]    --> src/lib.rs:87:62
[INFO] [stdout]     |
[INFO] [stdout] 87  |                     else         { write!(&mut err, "{:?}" , _tmp) }).unwrap();
[INFO] [stdout]     |                                                              ^^^^ `X` cannot be formatted using `{:?}`
[INFO] [stdout] ...
[INFO] [stdout] 270 |         dbg!(&a);
[INFO] [stdout]     |         --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Debug` is not implemented for `X`
[INFO] [stdout]     = note: add `#[derive(Debug)]` to `X` or manually `impl Debug for X`
[INFO] [stdout]     = note: this error originates in the macro `$crate::format_args` (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 `dbg` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "f81abe264f31f5e3e7d90c30bfc18e71166e4be44d09980141e63ec564c4dee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f81abe264f31f5e3e7d90c30bfc18e71166e4be44d09980141e63ec564c4dee3", kill_on_drop: false }`
[INFO] [stdout] f81abe264f31f5e3e7d90c30bfc18e71166e4be44d09980141e63ec564c4dee3