Sep 20 04:08:02.666 INFO checking calculator-0.0.1 against try#fcacde07b66fe513e52c41b73aef91bcc121905b for pr-54346
Sep 20 04:08:02.666 INFO running: cargo +fcacde07b66fe513e52c41b73aef91bcc121905b-alt check --frozen --all --all-targets
Sep 20 04:08:02.666 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54346/try#fcacde07b66fe513e52c41b73aef91bcc121905b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-0/try#fcacde07b66fe513e52c41b73aef91bcc121905b:/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 +fcacde07b66fe513e52c41b73aef91bcc121905b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 04:08:02.801 INFO blam! a5903ec17dd1062ffbbb3515ea6d38bc698c8ccc360ba058ab95a6de0f27cc8f
Sep 20 04:08:02.802 INFO running `"docker" "start" "-a" "a5903ec17dd1062ffbbb3515ea6d38bc698c8ccc360ba058ab95a6de0f27cc8f"`
Sep 20 04:08:04.214 INFO kablam! usermod: no changes
Sep 20 04:08:04.239 INFO kablam!     Checking vec_map v0.0.1
Sep 20 04:08:04.683 INFO kablam!     Checking calculator v0.0.1 (/source)
Sep 20 04:08:05.123 INFO kablam! error[E0635]: unknown feature `collections`
Sep 20 04:08:05.123 INFO kablam!  --> src/expr.rs:4:12
Sep 20 04:08:05.123 INFO kablam!   |
Sep 20 04:08:05.123 INFO kablam! 4 | #![feature(collections)]
Sep 20 04:08:05.123 INFO kablam!   |            ^^^^^^^^^^^
Sep 20 04:08:05.123 INFO kablam! 
Sep 20 04:08:05.135 INFO kablam! error: aborting due to previous error
Sep 20 04:08:05.135 INFO kablam! 
Sep 20 04:08:05.135 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 20 04:08:05.137 INFO kablam! error: Could not compile `calculator`.
Sep 20 04:08:05.137 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 20 04:08:05.371 INFO kablam! error[E0635]: unknown feature `collections`
Sep 20 04:08:05.371 INFO kablam!  --> src/expr.rs:4:12
Sep 20 04:08:05.371 INFO kablam!   |
Sep 20 04:08:05.371 INFO kablam! 4 | #![feature(collections)]
Sep 20 04:08:05.371 INFO kablam!   |            ^^^^^^^^^^^
Sep 20 04:08:05.371 INFO kablam! 
Sep 20 04:08:05.391 INFO kablam! error: aborting due to previous error
Sep 20 04:08:05.391 INFO kablam! 
Sep 20 04:08:05.391 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 20 04:08:05.403 INFO kablam! error: Could not compile `calculator`.
Sep 20 04:08:05.403 INFO kablam! 
Sep 20 04:08:05.403 INFO kablam! To learn more, run the command again with --verbose.
Sep 20 04:08:05.403 INFO kablam! su: No module specific data is present
Sep 20 04:08:06.122 INFO running `"docker" "rm" "-f" "a5903ec17dd1062ffbbb3515ea6d38bc698c8ccc360ba058ab95a6de0f27cc8f"`
Sep 20 04:08:06.387 INFO blam! a5903ec17dd1062ffbbb3515ea6d38bc698c8ccc360ba058ab95a6de0f27cc8f