[INFO] cloning repository DanielKeep/calendar-example
[INFO] running `"git" "clone" "--bare" "git://github.com/DanielKeep/calendar-example.git" "work/cache/sources/gh/DanielKeep/calendar-example"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/DanielKeep/calendar-example'...
[INFO] running `"git" "clone" "work/cache/sources/gh/DanielKeep/calendar-example" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/DanielKeep/calendar-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/DanielKeep/calendar-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DanielKeep/calendar-example" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/DanielKeep/calendar-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/DanielKeep/calendar-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 399f1b0fafac49df5e52a57b350a9c8b09ea046b
[INFO] sha for GitHub repo DanielKeep/calendar-example: 399f1b0fafac49df5e52a57b350a9c8b09ea046b
[INFO] validating manifest of DanielKeep/calendar-example on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of DanielKeep/calendar-example on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing DanielKeep/calendar-example
[INFO] finished frobbing DanielKeep/calendar-example
[INFO] frobbed toml for DanielKeep/calendar-example written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/DanielKeep/calendar-example/Cargo.toml
[INFO] started frobbing DanielKeep/calendar-example
[INFO] finished frobbing DanielKeep/calendar-example
[INFO] frobbed toml for DanielKeep/calendar-example written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/DanielKeep/calendar-example/Cargo.toml
[INFO] crate DanielKeep/calendar-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking DanielKeep/calendar-example against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-7/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/DanielKeep/calendar-example:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 35d6712613decbcbc4afd8d97c12c484dfac7c4be871c3c7d4b24afdb5ed1f8a
[INFO] running `"docker" "start" "-a" "35d6712613decbcbc4afd8d97c12c484dfac7c4be871c3c7d4b24afdb5ed1f8a"`
[INFO] [stderr]     Checking itertools v0.4.17
[INFO] [stderr]     Checking num v0.1.34
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking calendar v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
[INFO] [stderr]    --> bin.rs:386:23
[INFO] [stderr]     |
[INFO] [stderr] 386 | -> impl FnOnce(It) -> impl Iterator<Item=String>
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
[INFO] [stderr]    --> bin.rs:456:57
[INFO] [stderr]     |
[INFO] [stderr] 456 | fn chunks<It: Iterator>(n: usize) -> impl FnOnce(It) -> impl Iterator<Item=Vec<It::Item>> {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
[INFO] [stderr]    --> bin.rs:386:23
[INFO] [stderr]     |
[INFO] [stderr] 386 | -> impl FnOnce(It) -> impl Iterator<Item=String>
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
[INFO] [stderr]    --> bin.rs:456:57
[INFO] [stderr]     |
[INFO] [stderr] 456 | fn chunks<It: Iterator>(n: usize) -> impl FnOnce(It) -> impl Iterator<Item=Vec<It::Item>> {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0282]: type annotations needed
[INFO] [stderr]    --> bin.rs:506:15
[INFO] [stderr]     |
[INFO] [stderr] 506 |         .map(|r| r.into_iter()
[INFO] [stderr]     |               ^ consider giving this closure parameter a type
[INFO] [stderr]     |
[INFO] [stderr]     = note: type must be known at this point
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0282, E0562.
[INFO] [stderr] For more information about an error, try `rustc --explain E0282`.
[INFO] [stderr] error: Could not compile `calendar`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0282]: type annotations needed
[INFO] [stderr]    --> bin.rs:506:15
[INFO] [stderr]     |
[INFO] [stderr] 506 |         .map(|r| r.into_iter()
[INFO] [stderr]     |               ^ consider giving this closure parameter a type
[INFO] [stderr]     |
[INFO] [stderr]     = note: type must be known at this point
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0282, E0562.
[INFO] [stderr] For more information about an error, try `rustc --explain E0282`.
[INFO] [stderr] error: Could not compile `calendar`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "35d6712613decbcbc4afd8d97c12c484dfac7c4be871c3c7d4b24afdb5ed1f8a"`
[INFO] running `"docker" "rm" "-f" "35d6712613decbcbc4afd8d97c12c484dfac7c4be871c3c7d4b24afdb5ed1f8a"`
[INFO] [stdout] 35d6712613decbcbc4afd8d97c12c484dfac7c4be871c3c7d4b24afdb5ed1f8a