Sep 01 08:59:47.874 INFO checking calculator-0.0.1 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Sep 01 08:59:47.874 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Sep 01 08:59:47.875 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-0/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 08:59:48.101 INFO blam! 89ecc7aa4df94cacf7c050b4142a51c3d27d674ed07b9591f5de3f6f941772c7
Sep 01 08:59:48.104 INFO running `"docker" "start" "-a" "89ecc7aa4df94cacf7c050b4142a51c3d27d674ed07b9591f5de3f6f941772c7"`
Sep 01 08:59:48.781 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 01 08:59:49.790 INFO kablam! error[E0635]: unknown feature `collections`
Sep 01 08:59:49.790 INFO kablam!  --> src/expr.rs:4:12
Sep 01 08:59:49.790 INFO kablam!   |
Sep 01 08:59:49.790 INFO kablam! 4 | #![feature(collections)]
Sep 01 08:59:49.790 INFO kablam!   |            ^^^^^^^^^^^
Sep 01 08:59:49.790 INFO kablam! 
Sep 01 08:59:49.803 INFO kablam! error: aborting due to previous error
Sep 01 08:59:49.803 INFO kablam! 
Sep 01 08:59:49.803 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 08:59:49.809 INFO kablam! error: Could not compile `calculator`.
Sep 01 08:59:49.809 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 08:59:50.196 INFO kablam! error[E0635]: unknown feature `collections`
Sep 01 08:59:50.196 INFO kablam!  --> src/expr.rs:4:12
Sep 01 08:59:50.196 INFO kablam!   |
Sep 01 08:59:50.196 INFO kablam! 4 | #![feature(collections)]
Sep 01 08:59:50.196 INFO kablam!   |            ^^^^^^^^^^^
Sep 01 08:59:50.196 INFO kablam! 
Sep 01 08:59:50.223 INFO kablam! error: aborting due to previous error
Sep 01 08:59:50.223 INFO kablam! 
Sep 01 08:59:50.223 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 08:59:50.230 INFO kablam! error: Could not compile `calculator`.
Sep 01 08:59:50.230 INFO kablam! 
Sep 01 08:59:50.231 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 08:59:50.232 INFO kablam! su: No module specific data is present
Sep 01 08:59:50.683 INFO running `"docker" "rm" "-f" "89ecc7aa4df94cacf7c050b4142a51c3d27d674ed07b9591f5de3f6f941772c7"`
Sep 01 08:59:50.813 INFO blam! 89ecc7aa4df94cacf7c050b4142a51c3d27d674ed07b9591f5de3f6f941772c7