[INFO] crate pg_async 0.8.6 is already in cache
[INFO] extracting crate pg_async 0.8.6 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/pg_async/0.8.6
[INFO] extracting crate pg_async 0.8.6 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/pg_async/0.8.6
[INFO] validating manifest of pg_async-0.8.6 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pg_async-0.8.6 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pg_async-0.8.6
[INFO] removed 0 missing examples
[INFO] finished frobbing pg_async-0.8.6
[INFO] frobbed toml for pg_async-0.8.6 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/pg_async/0.8.6/Cargo.toml
[INFO] started frobbing pg_async-0.8.6
[INFO] removed 0 missing examples
[INFO] finished frobbing pg_async-0.8.6
[INFO] frobbed toml for pg_async-0.8.6 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/pg_async/0.8.6/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pg_async-0.8.6 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-6/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/pg_async/0.8.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2336114c18f668e4d65708a402ba44ff56c5261358598081342860e7881bf987
[INFO] running `"docker" "start" "-a" "2336114c18f668e4d65708a402ba44ff56c5261358598081342860e7881bf987"`
[INFO] [stderr]    Compiling pg_async v0.8.6 (/opt/crater/workdir)
[INFO] [stderr]     Checking inlinable_string v0.1.10
[INFO] [stderr]     Checking atomic v0.4.5
[INFO] [stderr]     Checking fomat-macros v0.2.1
[INFO] [stderr]     Checking gstuff v0.5.2
[INFO] [stderr] error[E0658]: type ascription is experimental
[INFO] [stderr]   --> src/tests.rs:9:35
[INFO] [stderr]    |
[INFO] [stderr] 9  |     static ref DSNS: Vec<String> = (io::BufReader::new (fs::File::open ("../pg_async.dsns") .expect ("!pg_async.dsns"))
[INFO] [stderr]    |  ___________________________________^
[INFO] [stderr] 10 | |     .lines().collect() :Result<Vec<String>, _>) .expect ("!pg_async.dsns");}
[INFO] [stderr]    | |______________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/23416
[INFO] [stderr]    = help: add #![feature(type_ascription)] to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `pg_async`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2336114c18f668e4d65708a402ba44ff56c5261358598081342860e7881bf987"`
[INFO] running `"docker" "rm" "-f" "2336114c18f668e4d65708a402ba44ff56c5261358598081342860e7881bf987"`
[INFO] [stdout] 2336114c18f668e4d65708a402ba44ff56c5261358598081342860e7881bf987