[INFO] crate dbg 1.0.4 is already in cache
[INFO] testing dbg-1.0.4 against beta-2020-07-24 for beta-1.46-1
[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-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 684bfd1226d531d1503d57a2a6174ad049f62e42efcbef16db4b6649c65506dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "684bfd1226d531d1503d57a2a6174ad049f62e42efcbef16db4b6649c65506dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "684bfd1226d531d1503d57a2a6174ad049f62e42efcbef16db4b6649c65506dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "684bfd1226d531d1503d57a2a6174ad049f62e42efcbef16db4b6649c65506dd", kill_on_drop: false }`
[INFO] [stdout] 684bfd1226d531d1503d57a2a6174ad049f62e42efcbef16db4b6649c65506dd
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5701cd593fe99107d68ee1c3b7c808a8a97fd4415fcaea6d2e5edf475c14d20
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f5701cd593fe99107d68ee1c3b7c808a8a97fd4415fcaea6d2e5edf475c14d20", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling dbg v1.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "f5701cd593fe99107d68ee1c3b7c808a8a97fd4415fcaea6d2e5edf475c14d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5701cd593fe99107d68ee1c3b7c808a8a97fd4415fcaea6d2e5edf475c14d20", kill_on_drop: false }`
[INFO] [stdout] f5701cd593fe99107d68ee1c3b7c808a8a97fd4415fcaea6d2e5edf475c14d20
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 04f8e953cada9f2184a5c4341218363c02c66c809506743539d5f199da37e5ce
[INFO] running `Command { std: "docker" "start" "-a" "04f8e953cada9f2184a5c4341218363c02c66c809506743539d5f199da37e5ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling dbg v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `tests::not_debug::X` doesn't implement `std::fmt::Debug`
[INFO] [stdout]    --> src/lib.rs:86:62
[INFO] [stdout]     |
[INFO] [stdout] 86  |                     (if detailed { write!(&mut err, "{:#?}", _tmp) }
[INFO] [stdout]     |                                                              ^^^^ `tests::not_debug::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 `std::fmt::Debug` is not implemented for `tests::not_debug::X`
[INFO] [stdout]     = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
[INFO] [stdout]     = note: required because of the requirements on the impl of `std::fmt::Debug` for `&tests::not_debug::X`
[INFO] [stdout]     = note: required because of the requirements on the impl of `std::fmt::Debug` for `WrapDebug<&tests::not_debug::X>`
[INFO] [stdout]     = note: required by `std::fmt::Debug::fmt`
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `tests::not_debug::X` doesn't implement `std::fmt::Debug`
[INFO] [stdout]    --> src/lib.rs:87:62
[INFO] [stdout]     |
[INFO] [stdout] 87  |                     else         { write!(&mut err, "{:?}" , _tmp) }).unwrap();
[INFO] [stdout]     |                                                              ^^^^ `tests::not_debug::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 `std::fmt::Debug` is not implemented for `tests::not_debug::X`
[INFO] [stdout]     = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
[INFO] [stdout]     = note: required because of the requirements on the impl of `std::fmt::Debug` for `&tests::not_debug::X`
[INFO] [stdout]     = note: required because of the requirements on the impl of `std::fmt::Debug` for `WrapDebug<&tests::not_debug::X>`
[INFO] [stdout]     = note: required by `std::fmt::Debug::fmt`
[INFO] [stdout]     = note: this error originates in a macro (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`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "04f8e953cada9f2184a5c4341218363c02c66c809506743539d5f199da37e5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04f8e953cada9f2184a5c4341218363c02c66c809506743539d5f199da37e5ce", kill_on_drop: false }`
[INFO] [stdout] 04f8e953cada9f2184a5c4341218363c02c66c809506743539d5f199da37e5ce