Sep 21 03:06:44.592 INFO checking shortcut-4.1.2 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 03:06:44.592 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 03:06:44.592 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-4/master#f7f4c500b46603386e940f116b469c7adc043a6d:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 03:06:45.330 INFO blam! d29c98aab7cd8fd36939aca653c0e570de59c4c0c5752640db98d1980394e39d
Sep 21 03:06:45.331 INFO running `"docker" "start" "-a" "d29c98aab7cd8fd36939aca653c0e570de59c4c0c5752640db98d1980394e39d"`
Sep 21 03:06:46.434 INFO kablam! usermod: no changes
Sep 21 03:06:46.482 INFO kablam!     Checking shortcut v4.1.2 (/source)
Sep 21 03:06:46.789 INFO kablam! warning: variable does not need to be mutable
Sep 21 03:06:46.789 INFO kablam!   --> src/idx.rs:55:21
Sep 21 03:06:46.789 INFO kablam!    |
Sep 21 03:06:46.789 INFO kablam! 55 |         if let Some(mut l) = self.map.get_mut(key) {
Sep 21 03:06:46.789 INFO kablam!    |                     ----^
Sep 21 03:06:46.789 INFO kablam!    |                     |
Sep 21 03:06:46.789 INFO kablam!    |                     help: remove this `mut`
Sep 21 03:06:46.789 INFO kablam!    |
Sep 21 03:06:46.789 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 21 03:06:46.789 INFO kablam! 
Sep 21 03:06:46.798 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 21 03:06:46.798 INFO kablam!   --> src/lib.rs:29:25
Sep 21 03:06:46.798 INFO kablam!    |
Sep 21 03:06:46.798 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 21 03:06:46.798 INFO kablam!    |                         ^^^^^^^^^^^^^^^^^
Sep 21 03:06:46.798 INFO kablam!    |
Sep 21 03:06:46.798 INFO kablam!    = note: #[warn(stable_features)] on by default
Sep 21 03:06:46.798 INFO kablam! 
Sep 21 03:06:46.798 INFO kablam! warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 21 03:06:46.798 INFO kablam!   --> src/lib.rs:29:12
Sep 21 03:06:46.798 INFO kablam!    |
Sep 21 03:06:46.798 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 21 03:06:46.798 INFO kablam!    |            ^^^^^^^^^^^
Sep 21 03:06:46.798 INFO kablam! 
Sep 21 03:06:46.948 INFO kablam! warning: variable does not need to be mutable
Sep 21 03:06:46.948 INFO kablam!   --> src/idx.rs:55:21
Sep 21 03:06:46.948 INFO kablam!    |
Sep 21 03:06:46.948 INFO kablam! 55 |         if let Some(mut l) = self.map.get_mut(key) {
Sep 21 03:06:46.948 INFO kablam!    |                     ----^
Sep 21 03:06:46.948 INFO kablam!    |                     |
Sep 21 03:06:46.948 INFO kablam!    |                     help: remove this `mut`
Sep 21 03:06:46.948 INFO kablam!    |
Sep 21 03:06:46.948 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 21 03:06:46.948 INFO kablam! 
Sep 21 03:06:46.968 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 21 03:06:46.968 INFO kablam!   --> src/lib.rs:29:25
Sep 21 03:06:46.968 INFO kablam!    |
Sep 21 03:06:46.968 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 21 03:06:46.968 INFO kablam!    |                         ^^^^^^^^^^^^^^^^^
Sep 21 03:06:46.968 INFO kablam!    |
Sep 21 03:06:46.968 INFO kablam!    = note: #[warn(stable_features)] on by default
Sep 21 03:06:46.968 INFO kablam! 
Sep 21 03:06:46.968 INFO kablam! warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 21 03:06:46.968 INFO kablam!   --> src/lib.rs:29:12
Sep 21 03:06:46.968 INFO kablam!    |
Sep 21 03:06:46.968 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 21 03:06:46.968 INFO kablam!    |            ^^^^^^^^^^^
Sep 21 03:06:46.968 INFO kablam! 
Sep 21 03:06:47.143 INFO kablam! error[E0308]: mismatched types
Sep 21 03:06:47.143 INFO kablam!   --> benches/bench.rs:62:59
Sep 21 03:06:47.143 INFO kablam!    |
Sep 21 03:06:47.143 INFO kablam! 62 |             cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))),
Sep 21 03:06:47.143 INFO kablam!    |                                                           ^^^^^^^^^^^^^^^^ expected enum `std::borrow::Cow`, found struct `std::string::String`
Sep 21 03:06:47.143 INFO kablam!    |
Sep 21 03:06:47.143 INFO kablam!    = note: expected type `std::borrow::Cow<'_, _>`
Sep 21 03:06:47.143 INFO kablam!               found type `std::string::String`
Sep 21 03:06:47.143 INFO kablam!    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Sep 21 03:06:47.143 INFO kablam! 
Sep 21 03:06:47.152 INFO kablam! error: aborting due to previous error
Sep 21 03:06:47.152 INFO kablam! 
Sep 21 03:06:47.152 INFO kablam! For more information about this error, try `rustc --explain E0308`.
Sep 21 03:06:47.161 INFO kablam! error: Could not compile `shortcut`.
Sep 21 03:06:47.161 INFO kablam! 
Sep 21 03:06:47.161 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 03:06:47.163 INFO kablam! su: No module specific data is present
Sep 21 03:06:47.638 INFO running `"docker" "rm" "-f" "d29c98aab7cd8fd36939aca653c0e570de59c4c0c5752640db98d1980394e39d"`
Sep 21 03:06:47.739 INFO blam! d29c98aab7cd8fd36939aca653c0e570de59c4c0c5752640db98d1980394e39d