Sep 10 22:32:53.478 INFO checking atomic_cell-0.1.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 22:32:53.478 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 22:32:53.478 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 22:32:53.684 INFO blam! c7c1bf1ab55822ad96b3df245e1223c5e34f2d15e604f87e10253acbf165b87c
Sep 10 22:32:53.686 INFO running `"docker" "start" "-a" "c7c1bf1ab55822ad96b3df245e1223c5e34f2d15e604f87e10253acbf165b87c"`
Sep 10 22:32:54.981 INFO kablam! usermod: no changes
Sep 10 22:32:55.069 INFO kablam!     Checking vec_map v0.3.0
Sep 10 22:32:55.069 INFO kablam!     Checking atomic_cell v0.1.0 (file:///source)
Sep 10 22:32:55.466 INFO kablam! warning: variable does not need to be mutable
Sep 10 22:32:55.467 INFO kablam!    --> src/lib.rs:394:43
Sep 10 22:32:55.467 INFO kablam!     |
Sep 10 22:32:55.467 INFO kablam! 394 |         let old_ptr = self.with_lock_mut(|mut ptr : &mut*mut T| {
Sep 10 22:32:55.467 INFO kablam!     |                                           ----^^^
Sep 10 22:32:55.467 INFO kablam!     |                                           |
Sep 10 22:32:55.467 INFO kablam!     |                                           help: remove this `mut`
Sep 10 22:32:55.467 INFO kablam!     |
Sep 10 22:32:55.467 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 10 22:32:55.467 INFO kablam! 
Sep 10 22:32:55.469 INFO kablam! error[E0635]: unknown feature `catch_panic`
Sep 10 22:32:55.469 INFO kablam!  --> src/lib.rs:2:12
Sep 10 22:32:55.470 INFO kablam!   |
Sep 10 22:32:55.470 INFO kablam! 2 | #![feature(catch_panic)] // For testing
Sep 10 22:32:55.470 INFO kablam!   |            ^^^^^^^^^^^
Sep 10 22:32:55.470 INFO kablam! 
Sep 10 22:32:55.493 INFO kablam! error: aborting due to previous error
Sep 10 22:32:55.498 INFO kablam! 
Sep 10 22:32:55.498 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 22:32:55.501 INFO kablam! error: Could not compile `atomic_cell`.
Sep 10 22:32:55.501 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 22:32:55.737 INFO kablam! error: build failed
Sep 10 22:32:55.737 INFO kablam! su: No module specific data is present
Sep 10 22:32:56.400 INFO running `"docker" "rm" "-f" "c7c1bf1ab55822ad96b3df245e1223c5e34f2d15e604f87e10253acbf165b87c"`
Sep 10 22:32:56.528 INFO blam! c7c1bf1ab55822ad96b3df245e1223c5e34f2d15e604f87e10253acbf165b87c