Sep 14 09:06:10.365 INFO checking shortcut-4.1.2 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 09:06:10.365 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 09:06:10.365 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-7/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 09:06:10.520 INFO blam! 9e7eb3e4fc69df83af0c426535935f42fcbe9139e03d7fd419d95a87ff48a328
Sep 14 09:06:10.521 INFO running `"docker" "start" "-a" "9e7eb3e4fc69df83af0c426535935f42fcbe9139e03d7fd419d95a87ff48a328"`
Sep 14 09:06:11.598 INFO kablam! usermod: no changes
Sep 14 09:06:11.642 INFO kablam!     Checking shortcut v4.1.2 (file:///source)
Sep 14 09:06:11.978 INFO kablam! warning: variable does not need to be mutable
Sep 14 09:06:11.978 INFO kablam!   --> src/idx.rs:55:21
Sep 14 09:06:11.978 INFO kablam!    |
Sep 14 09:06:11.978 INFO kablam! 55 |         if let Some(mut l) = self.map.get_mut(key) {
Sep 14 09:06:11.978 INFO kablam!    |                     ----^
Sep 14 09:06:11.978 INFO kablam!    |                     |
Sep 14 09:06:11.978 INFO kablam!    |                     help: remove this `mut`
Sep 14 09:06:11.978 INFO kablam!    |
Sep 14 09:06:11.978 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 09:06:11.978 INFO kablam! 
Sep 14 09:06:11.996 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 14 09:06:11.996 INFO kablam!   --> src/lib.rs:29:25
Sep 14 09:06:11.996 INFO kablam!    |
Sep 14 09:06:11.996 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 14 09:06:11.996 INFO kablam!    |                         ^^^^^^^^^^^^^^^^^
Sep 14 09:06:11.996 INFO kablam!    |
Sep 14 09:06:11.996 INFO kablam!    = note: #[warn(stable_features)] on by default
Sep 14 09:06:11.996 INFO kablam! 
Sep 14 09:06:11.999 INFO kablam! warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 14 09:06:11.999 INFO kablam!   --> src/lib.rs:29:12
Sep 14 09:06:11.999 INFO kablam!    |
Sep 14 09:06:11.999 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 14 09:06:11.999 INFO kablam!    |            ^^^^^^^^^^^
Sep 14 09:06:11.999 INFO kablam! 
Sep 14 09:06:12.260 INFO kablam! warning: variable does not need to be mutable
Sep 14 09:06:12.260 INFO kablam!   --> src/idx.rs:55:21
Sep 14 09:06:12.260 INFO kablam!    |
Sep 14 09:06:12.260 INFO kablam! 55 |         if let Some(mut l) = self.map.get_mut(key) {
Sep 14 09:06:12.260 INFO kablam!    |                     ----^
Sep 14 09:06:12.260 INFO kablam!    |                     |
Sep 14 09:06:12.260 INFO kablam!    |                     help: remove this `mut`
Sep 14 09:06:12.260 INFO kablam!    |
Sep 14 09:06:12.260 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 09:06:12.260 INFO kablam! 
Sep 14 09:06:12.281 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 14 09:06:12.281 INFO kablam!   --> src/lib.rs:29:25
Sep 14 09:06:12.281 INFO kablam!    |
Sep 14 09:06:12.281 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 14 09:06:12.281 INFO kablam!    |                         ^^^^^^^^^^^^^^^^^
Sep 14 09:06:12.281 INFO kablam!    |
Sep 14 09:06:12.281 INFO kablam!    = note: #[warn(stable_features)] on by default
Sep 14 09:06:12.281 INFO kablam! 
Sep 14 09:06:12.281 INFO kablam! warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 14 09:06:12.281 INFO kablam!   --> src/lib.rs:29:12
Sep 14 09:06:12.281 INFO kablam!    |
Sep 14 09:06:12.281 INFO kablam! 29 | #![feature(btree_range, collections_bound)]
Sep 14 09:06:12.281 INFO kablam!    |            ^^^^^^^^^^^
Sep 14 09:06:12.281 INFO kablam! 
Sep 14 09:06:12.486 INFO kablam! error[E0308]: mismatched types
Sep 14 09:06:12.486 INFO kablam!   --> benches/bench.rs:62:59
Sep 14 09:06:12.486 INFO kablam!    |
Sep 14 09:06:12.486 INFO kablam! 62 |             cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))),
Sep 14 09:06:12.486 INFO kablam!    |                                                           ^^^^^^^^^^^^^^^^ expected enum `std::borrow::Cow`, found struct `std::string::String`
Sep 14 09:06:12.486 INFO kablam!    |
Sep 14 09:06:12.486 INFO kablam!    = note: expected type `std::borrow::Cow<'_, _>`
Sep 14 09:06:12.486 INFO kablam!               found type `std::string::String`
Sep 14 09:06:12.486 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 14 09:06:12.486 INFO kablam! 
Sep 14 09:06:12.500 INFO kablam! error: aborting due to previous error
Sep 14 09:06:12.500 INFO kablam! 
Sep 14 09:06:12.500 INFO kablam! For more information about this error, try `rustc --explain E0308`.
Sep 14 09:06:12.513 INFO kablam! error: Could not compile `shortcut`.
Sep 14 09:06:12.513 INFO kablam! 
Sep 14 09:06:12.513 INFO kablam! To learn more, run the command again with --verbose.
Sep 14 09:06:12.513 INFO kablam! su: No module specific data is present
Sep 14 09:06:13.065 INFO running `"docker" "rm" "-f" "9e7eb3e4fc69df83af0c426535935f42fcbe9139e03d7fd419d95a87ff48a328"`
Sep 14 09:06:13.144 INFO blam! 9e7eb3e4fc69df83af0c426535935f42fcbe9139e03d7fd419d95a87ff48a328