Sep 02 01:33:13.846 INFO checking calculator-0.0.1 against try#aa245a5862056b681d2ccdb178f58891108cd3a6 for pr-53831
Sep 02 01:33:13.846 INFO running: cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets
Sep 02 01:33:13.846 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/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 +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 01:33:13.994 INFO blam! a2fb94edc01cafbb45d44bdb171860e908401e1efaa8016b23ced7aec6f41cf0
Sep 02 01:33:13.996 INFO running `"docker" "start" "-a" "a2fb94edc01cafbb45d44bdb171860e908401e1efaa8016b23ced7aec6f41cf0"`
Sep 02 01:33:14.617 INFO kablam!     Checking vec_map v0.0.1
Sep 02 01:33:15.395 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 02 01:33:16.459 INFO kablam! error[E0635]: unknown feature `collections`
Sep 02 01:33:16.459 INFO kablam!  --> src/expr.rs:4:12
Sep 02 01:33:16.460 INFO kablam!   |
Sep 02 01:33:16.460 INFO kablam! 4 | #![feature(collections)]
Sep 02 01:33:16.460 INFO kablam!   |            ^^^^^^^^^^^
Sep 02 01:33:16.460 INFO kablam! 
Sep 02 01:33:16.480 INFO kablam! error: aborting due to previous error
Sep 02 01:33:16.480 INFO kablam! 
Sep 02 01:33:16.480 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 02 01:33:16.488 INFO kablam! error: Could not compile `calculator`.
Sep 02 01:33:16.488 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 02 01:33:16.840 INFO kablam! error[E0635]: unknown feature `collections`
Sep 02 01:33:16.840 INFO kablam!  --> src/expr.rs:4:12
Sep 02 01:33:16.840 INFO kablam!   |
Sep 02 01:33:16.840 INFO kablam! 4 | #![feature(collections)]
Sep 02 01:33:16.840 INFO kablam!   |            ^^^^^^^^^^^
Sep 02 01:33:16.840 INFO kablam! 
Sep 02 01:33:16.872 INFO kablam! error: aborting due to previous error
Sep 02 01:33:16.872 INFO kablam! 
Sep 02 01:33:16.872 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 02 01:33:16.878 INFO kablam! error: Could not compile `calculator`.
Sep 02 01:33:16.879 INFO kablam! 
Sep 02 01:33:16.879 INFO kablam! To learn more, run the command again with --verbose.
Sep 02 01:33:16.880 INFO kablam! su: No module specific data is present
Sep 02 01:33:17.401 INFO running `"docker" "rm" "-f" "a2fb94edc01cafbb45d44bdb171860e908401e1efaa8016b23ced7aec6f41cf0"`
Sep 02 01:33:17.540 INFO blam! a2fb94edc01cafbb45d44bdb171860e908401e1efaa8016b23ced7aec6f41cf0