Sep 20 05:47:45.041 INFO checking calculator-0.0.1 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 20 05:47:45.041 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 20 05:47:45.041 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-4/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 05:47:45.187 INFO blam! 20380af8d5437a80e0109c83b098ae9a77898bad2e4ca7f7f6035894aefe7c65
Sep 20 05:47:45.189 INFO running `"docker" "start" "-a" "20380af8d5437a80e0109c83b098ae9a77898bad2e4ca7f7f6035894aefe7c65"`
Sep 20 05:47:46.182 INFO kablam! usermod: no changes
Sep 20 05:47:46.234 INFO kablam!     Checking vec_map v0.0.1
Sep 20 05:47:46.770 INFO kablam!     Checking calculator v0.0.1 (/source)
Sep 20 05:47:47.242 INFO kablam! error[E0635]: unknown feature `collections`
Sep 20 05:47:47.242 INFO kablam!  --> src/expr.rs:4:12
Sep 20 05:47:47.242 INFO kablam!   |
Sep 20 05:47:47.242 INFO kablam! 4 | #![feature(collections)]
Sep 20 05:47:47.242 INFO kablam!   |            ^^^^^^^^^^^
Sep 20 05:47:47.242 INFO kablam! 
Sep 20 05:47:47.262 INFO kablam! error: aborting due to previous error
Sep 20 05:47:47.262 INFO kablam! 
Sep 20 05:47:47.262 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 20 05:47:47.266 INFO kablam! error: Could not compile `calculator`.
Sep 20 05:47:47.266 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 20 05:47:47.526 INFO kablam! error[E0635]: unknown feature `collections`
Sep 20 05:47:47.526 INFO kablam!  --> src/expr.rs:4:12
Sep 20 05:47:47.526 INFO kablam!   |
Sep 20 05:47:47.526 INFO kablam! 4 | #![feature(collections)]
Sep 20 05:47:47.526 INFO kablam!   |            ^^^^^^^^^^^
Sep 20 05:47:47.526 INFO kablam! 
Sep 20 05:47:47.561 INFO kablam! error: aborting due to previous error
Sep 20 05:47:47.561 INFO kablam! 
Sep 20 05:47:47.561 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 20 05:47:47.569 INFO kablam! error: Could not compile `calculator`.
Sep 20 05:47:47.569 INFO kablam! 
Sep 20 05:47:47.569 INFO kablam! To learn more, run the command again with --verbose.
Sep 20 05:47:47.569 INFO kablam! su: No module specific data is present
Sep 20 05:47:48.493 INFO running `"docker" "rm" "-f" "20380af8d5437a80e0109c83b098ae9a77898bad2e4ca7f7f6035894aefe7c65"`
Sep 20 05:47:48.609 INFO blam! 20380af8d5437a80e0109c83b098ae9a77898bad2e4ca7f7f6035894aefe7c65