Sep 01 23:58:17.910 INFO checking shortcut-4.1.2 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 01 23:58:17.910 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 23:58:17.911 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-0/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 23:58:19.378 INFO blam! 81e8d1f961add76eaea15d979f014186739500bec46e4285f01fd4a63a312376
Sep 01 23:58:19.380 INFO running `"docker" "start" "-a" "81e8d1f961add76eaea15d979f014186739500bec46e4285f01fd4a63a312376"`
Sep 01 23:58:21.825 INFO kablam!     Checking shortcut v4.1.2 (file:///source)
Sep 01 23:58:22.778 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:58:22.778 INFO kablam!   --> src/idx.rs:55:21
Sep 01 23:58:22.778 INFO kablam!    |
Sep 01 23:58:22.778 INFO kablam! 55 |         if let Some(mut l) = self.map.get_mut(key) {
Sep 01 23:58:22.778 INFO kablam!    |                     ----^
Sep 01 23:58:22.779 INFO kablam!    |                     |
Sep 01 23:58:22.779 INFO kablam!    |                     help: remove this `mut`
Sep 01 23:58:22.779 INFO kablam!    |
Sep 01 23:58:22.779 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 23:58:22.779 INFO kablam! 
Sep 01 23:58:22.805 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 01 23:58:22.805 INFO kablam!   --> src/lib.rs:29:25
Sep 01 23:58:22.805 INFO kablam!    |
Sep 01 23:58:22.805 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 01 23:58:22.805 INFO kablam!    |                         ^^^^^^^^^^^^^^^^^
Sep 01 23:58:22.805 INFO kablam!    |
Sep 01 23:58:22.805 INFO kablam!    = note: #[warn(stable_features)] on by default
Sep 01 23:58:22.805 INFO kablam! 
Sep 01 23:58:22.806 INFO kablam! warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 01 23:58:22.806 INFO kablam!   --> src/lib.rs:29:12
Sep 01 23:58:22.806 INFO kablam!    |
Sep 01 23:58:22.806 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 01 23:58:22.806 INFO kablam!    |            ^^^^^^^^^^^
Sep 01 23:58:22.806 INFO kablam! 
Sep 01 23:58:23.339 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:58:23.339 INFO kablam!   --> src/idx.rs:55:21
Sep 01 23:58:23.339 INFO kablam!    |
Sep 01 23:58:23.339 INFO kablam! 55 |         if let Some(mut l) = self.map.get_mut(key) {
Sep 01 23:58:23.339 INFO kablam!    |                     ----^
Sep 01 23:58:23.339 INFO kablam!    |                     |
Sep 01 23:58:23.339 INFO kablam!    |                     help: remove this `mut`
Sep 01 23:58:23.339 INFO kablam!    |
Sep 01 23:58:23.339 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 23:58:23.339 INFO kablam! 
Sep 01 23:58:23.388 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 01 23:58:23.388 INFO kablam!   --> src/lib.rs:29:25
Sep 01 23:58:23.388 INFO kablam!    |
Sep 01 23:58:23.388 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 01 23:58:23.388 INFO kablam!    |                         ^^^^^^^^^^^^^^^^^
Sep 01 23:58:23.388 INFO kablam!    |
Sep 01 23:58:23.388 INFO kablam!    = note: #[warn(stable_features)] on by default
Sep 01 23:58:23.388 INFO kablam! 
Sep 01 23:58:23.388 INFO kablam! warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 01 23:58:23.389 INFO kablam!   --> src/lib.rs:29:12
Sep 01 23:58:23.389 INFO kablam!    |
Sep 01 23:58:23.389 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 01 23:58:23.389 INFO kablam!    |            ^^^^^^^^^^^
Sep 01 23:58:23.389 INFO kablam! 
Sep 01 23:58:24.286 INFO kablam! error[E0308]: mismatched types
Sep 01 23:58:24.286 INFO kablam!   --> benches/bench.rs:62:59
Sep 01 23:58:24.286 INFO kablam!    |
Sep 01 23:58:24.286 INFO kablam! 62 |             cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))),
Sep 01 23:58:24.286 INFO kablam!    |                                                           ^^^^^^^^^^^^^^^^ expected enum `std::borrow::Cow`, found struct `std::string::String`
Sep 01 23:58:24.287 INFO kablam!    |
Sep 01 23:58:24.287 INFO kablam!    = note: expected type `std::borrow::Cow<'_, _>`
Sep 01 23:58:24.287 INFO kablam!               found type `std::string::String`
Sep 01 23:58:24.287 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 01 23:58:24.287 INFO kablam! 
Sep 01 23:58:24.309 INFO kablam! error: aborting due to previous error
Sep 01 23:58:24.310 INFO kablam! 
Sep 01 23:58:24.310 INFO kablam! For more information about this error, try `rustc --explain E0308`.
Sep 01 23:58:24.321 INFO kablam! error: Could not compile `shortcut`.
Sep 01 23:58:24.321 INFO kablam! 
Sep 01 23:58:24.321 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 23:58:24.323 INFO kablam! su: No module specific data is present
Sep 01 23:58:24.880 INFO running `"docker" "rm" "-f" "81e8d1f961add76eaea15d979f014186739500bec46e4285f01fd4a63a312376"`
Sep 01 23:58:24.979 INFO blam! 81e8d1f961add76eaea15d979f014186739500bec46e4285f01fd4a63a312376