[INFO] crate slog-html 0.1.3 is already in cache
[INFO] extracting crate slog-html 0.1.3 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/slog-html/0.1.3
[INFO] extracting crate slog-html 0.1.3 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/slog-html/0.1.3
[INFO] validating manifest of slog-html-0.1.3 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slog-html-0.1.3 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slog-html-0.1.3
[INFO] finished frobbing slog-html-0.1.3
[INFO] frobbed toml for slog-html-0.1.3 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/slog-html/0.1.3/Cargo.toml
[INFO] started frobbing slog-html-0.1.3
[INFO] finished frobbing slog-html-0.1.3
[INFO] frobbed toml for slog-html-0.1.3 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/slog-html/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking slog-html-0.1.3 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/slog-html/0.1.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e2617f4c17f06e2b9f349f3a50fa8b0c7e1ef887ec3e3675ffd82e9e2a640e31
[INFO] running `"docker" "start" "-a" "e2617f4c17f06e2b9f349f3a50fa8b0c7e1ef887ec3e3675ffd82e9e2a640e31"`
[INFO] [stderr]     Checking slog v1.7.1
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr] error[E0119]: conflicting implementations of trait `ser::Serialize` for type `std::rc::Rc<_>`:
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/slog-1.7.1/src/ser.rs:284:1
[INFO] [stderr]     |
[INFO] [stderr] 266 | / impl<T> Serialize for Rc<T>
[INFO] [stderr] 267 | |     where T: Serialize
[INFO] [stderr] 268 | | {
[INFO] [stderr] 269 | |     fn serialize(&self, record: &Record, key: &'static str, serializer: &mut Serializer) -> result::Result<(), Error> {
[INFO] [stderr] 270 | |         (**self).serialize(record, key, serializer)
[INFO] [stderr] 271 | |     }
[INFO] [stderr] 272 | | }
[INFO] [stderr]     | |_- first implementation here
[INFO] [stderr] ...
[INFO] [stderr] 284 | / impl<S: 'static + Serialize, F> Serialize for F
[INFO] [stderr] 285 | |     where F: 'static + for<'c, 'd> Fn(&'c Record<'d>) -> S
[INFO] [stderr] 286 | | {
[INFO] [stderr] 287 | |     fn serialize(&self, record: &Record, key: &'static str, serializer: &mut Serializer) -> result::Result<(), Error> {
[INFO] [stderr] 288 | |         (*self)(record).serialize(record, key, serializer)
[INFO] [stderr] 289 | |     }
[INFO] [stderr] 290 | | }
[INFO] [stderr]     | |_^ conflicting implementation for `std::rc::Rc<_>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: downstream crates may implement trait `core::ops::FnOnce<(&'c Record<'d>,)>` for type `std::rc::Rc<_>`
[INFO] [stderr]     = note: downstream crates may implement trait `core::ops::Fn<(&'c Record<'d>,)>` for type `std::rc::Rc<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0119]: conflicting implementations of trait `ser::SyncSerialize` for type `std::sync::Arc<_>`:
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/slog-1.7.1/src/ser.rs:292:1
[INFO] [stderr]     |
[INFO] [stderr] 264 |   impl<T> SyncSerialize for Arc<T> where T: SyncSerialize {}
[INFO] [stderr]     |   ------------------------------------------------------- first implementation here
[INFO] [stderr] ...
[INFO] [stderr] 292 | / impl<S: 'static + Serialize, F> SyncSerialize for F
[INFO] [stderr] 293 | |     where F: 'static + Sync + Send + for<'c, 'd> Fn(&'c Record<'d>) -> S
[INFO] [stderr] 294 | | {
[INFO] [stderr] 295 | | }
[INFO] [stderr]     | |_^ conflicting implementation for `std::sync::Arc<_>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: downstream crates may implement trait `core::ops::FnOnce<(&'c Record<'d>,)>` for type `std::sync::Arc<_>`
[INFO] [stderr]     = note: downstream crates may implement trait `core::ops::Fn<(&'c Record<'d>,)>` for type `std::sync::Arc<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0119`.
[INFO] [stderr] error: Could not compile `slog`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e2617f4c17f06e2b9f349f3a50fa8b0c7e1ef887ec3e3675ffd82e9e2a640e31"`
[INFO] running `"docker" "rm" "-f" "e2617f4c17f06e2b9f349f3a50fa8b0c7e1ef887ec3e3675ffd82e9e2a640e31"`
[INFO] [stdout] e2617f4c17f06e2b9f349f3a50fa8b0c7e1ef887ec3e3675ffd82e9e2a640e31