[INFO] fetching crate enum-utils 0.1.2...
[INFO] checking enum-utils-0.1.2 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate enum-utils 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate enum-utils 0.1.2 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enum-utils 0.1.2
[INFO] finished tweaking crates.io crate enum-utils 0.1.2
[INFO] tweaked toml for crates.io crate enum-utils 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68948633de14837c4e4f99501ee5f424c78a01a2daabd21ab4c27196ab4d92d4
[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" "68948633de14837c4e4f99501ee5f424c78a01a2daabd21ab4c27196ab4d92d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68948633de14837c4e4f99501ee5f424c78a01a2daabd21ab4c27196ab4d92d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68948633de14837c4e4f99501ee5f424c78a01a2daabd21ab4c27196ab4d92d4", kill_on_drop: false }`
[INFO] [stdout] 68948633de14837c4e4f99501ee5f424c78a01a2daabd21ab4c27196ab4d92d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0d795423e353f39b26e28e395ca55cd6f74ce93570b4e6e95785b1581002b17
[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" "b0d795423e353f39b26e28e395ca55cd6f74ce93570b4e6e95785b1581002b17", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pulldown-cmark v0.4.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking syn v1.0.60
[INFO] [stderr]     Checking enum-utils-from-str v0.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking serde_derive_internals v0.25.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking enum-utils v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking version-sync v0.8.1
[INFO] [stdout] error[E0566]: conflicting representation hints
[INFO] [stdout]   --> tests/iter.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | #[repr(C, u16)]
[INFO] [stdout]    |        ^  ^^^
[INFO] [stdout] 58 | #[repr(align(2))]
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(conflicting_repr_hints)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #68585 <https://github.com/rust-lang/rust/issues/68585>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0566`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enum-utils`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b0d795423e353f39b26e28e395ca55cd6f74ce93570b4e6e95785b1581002b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0d795423e353f39b26e28e395ca55cd6f74ce93570b4e6e95785b1581002b17", kill_on_drop: false }`
[INFO] [stdout] b0d795423e353f39b26e28e395ca55cd6f74ce93570b4e6e95785b1581002b17