Sep 14 18:52:48.468 INFO checking calculator-0.0.1 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 18:52:48.468 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 18:52:48.468 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-4/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 18:52:48.686 INFO blam! 0f4d71b248818f3d39f6433f078186206947b019825292b57e1a76696d6bf49a
Sep 14 18:52:48.692 INFO running `"docker" "start" "-a" "0f4d71b248818f3d39f6433f078186206947b019825292b57e1a76696d6bf49a"`
Sep 14 18:52:49.487 INFO kablam! usermod: no changes
Sep 14 18:52:49.540 INFO kablam!     Checking vec_map v0.0.1
Sep 14 18:52:50.087 INFO kablam!     Checking calculator v0.0.1 (file:///source)
Sep 14 18:52:50.663 INFO kablam! error[E0635]: unknown feature `collections`
Sep 14 18:52:50.663 INFO kablam!  --> src/expr.rs:4:12
Sep 14 18:52:50.663 INFO kablam!   |
Sep 14 18:52:50.663 INFO kablam! 4 | #![feature(collections)]
Sep 14 18:52:50.663 INFO kablam!   |            ^^^^^^^^^^^
Sep 14 18:52:50.663 INFO kablam! 
Sep 14 18:52:50.678 INFO kablam! error: aborting due to previous error
Sep 14 18:52:50.679 INFO kablam! 
Sep 14 18:52:50.679 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 14 18:52:50.683 INFO kablam! error: Could not compile `calculator`.
Sep 14 18:52:50.683 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 14 18:52:50.929 INFO kablam! error[E0635]: unknown feature `collections`
Sep 14 18:52:50.929 INFO kablam!  --> src/expr.rs:4:12
Sep 14 18:52:50.929 INFO kablam!   |
Sep 14 18:52:50.929 INFO kablam! 4 | #![feature(collections)]
Sep 14 18:52:50.930 INFO kablam!   |            ^^^^^^^^^^^
Sep 14 18:52:50.930 INFO kablam! 
Sep 14 18:52:50.971 INFO kablam! error: aborting due to previous error
Sep 14 18:52:50.971 INFO kablam! 
Sep 14 18:52:50.971 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 14 18:52:50.972 INFO kablam! error: Could not compile `calculator`.
Sep 14 18:52:50.972 INFO kablam! 
Sep 14 18:52:50.973 INFO kablam! To learn more, run the command again with --verbose.
Sep 14 18:52:50.974 INFO kablam! su: No module specific data is present
Sep 14 18:52:51.983 INFO running `"docker" "rm" "-f" "0f4d71b248818f3d39f6433f078186206947b019825292b57e1a76696d6bf49a"`
Sep 14 18:52:52.147 INFO blam! 0f4d71b248818f3d39f6433f078186206947b019825292b57e1a76696d6bf49a