[INFO] updating cached repository https://github.com/DanielKeep/calendar-example
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 399f1b0fafac49df5e52a57b350a9c8b09ea046b
[INFO] checking DanielKeep/calendar-example against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielKeep%2Fcalendar-example" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DanielKeep/calendar-example on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/DanielKeep/calendar-example
[INFO] finished tweaking git repo https://github.com/DanielKeep/calendar-example
[INFO] tweaked toml for git repo https://github.com/DanielKeep/calendar-example written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/DanielKeep/calendar-example already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fcaf1dd1251e1a8f6d35b4fa6cfc7089495d7f2790fc3dd6fdb0ca0d368b942e
[INFO] running `"docker" "start" "-a" "fcaf1dd1251e1a8f6d35b4fa6cfc7089495d7f2790fc3dd6fdb0ca0d368b942e"`
[INFO] [stderr]     Checking num-traits v0.1.34
[INFO] [stderr]     Checking libc v0.2.15
[INFO] [stderr]     Checking itertools v0.4.17
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking num v0.1.34
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking calendar v0.1.0 (/opt/rustwide/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:391:11
[INFO] [stderr]     |
[INFO] [stderr] 391 |     move |it| {
[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[E0282]: type annotations needed
[INFO] [stderr]    --> bin.rs:391:11
[INFO] [stderr]     |
[INFO] [stderr] 391 |     move |it| {
[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[E0282]: type annotations needed
[INFO] [stderr]    --> bin.rs:466:11
[INFO] [stderr]     |
[INFO] [stderr] 466 |     move |mut it| {
[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[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 5 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[E0282]: type annotations needed
[INFO] [stderr]    --> bin.rs:466:11
[INFO] [stderr]     |
[INFO] [stderr] 466 |     move |mut it| {
[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: could not compile `calendar`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[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 5 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" "fcaf1dd1251e1a8f6d35b4fa6cfc7089495d7f2790fc3dd6fdb0ca0d368b942e"`
[INFO] running `"docker" "rm" "-f" "fcaf1dd1251e1a8f6d35b4fa6cfc7089495d7f2790fc3dd6fdb0ca0d368b942e"`
[INFO] [stdout] fcaf1dd1251e1a8f6d35b4fa6cfc7089495d7f2790fc3dd6fdb0ca0d368b942e
