Sep 10 13:46:10.870 INFO checking num-bigint-0.2.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 13:46:10.870 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 13:46:10.870 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-5/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 13:46:11.074 INFO blam! 45d9f4a49dddac8365af327d5ee4776ebd142e1a38530276e50d7e4c5e5bb839
Sep 10 13:46:11.076 INFO running `"docker" "start" "-a" "45d9f4a49dddac8365af327d5ee4776ebd142e1a38530276e50d7e4c5e5bb839"`
Sep 10 13:46:12.337 INFO kablam! usermod: no changes
Sep 10 13:46:12.430 INFO kablam!    Compiling num-bigint v0.2.0 (file:///source)
Sep 10 13:46:19.228 INFO kablam! error[E0464]: multiple matching crates for `rand`
Sep 10 13:46:19.228 INFO kablam!  --> benches/gcd.rs:7:1
Sep 10 13:46:19.228 INFO kablam!   |
Sep 10 13:46:19.228 INFO kablam! 7 | extern crate rand;
Sep 10 13:46:19.228 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 10 13:46:19.232 INFO kablam!   |
Sep 10 13:46:19.232 INFO kablam!   = note: candidates:
Sep 10 13:46:19.233 INFO kablam!           crate `rand`: /rustup-home/toolchains/f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-4085472da6991927.rlib
Sep 10 13:46:19.233 INFO kablam!           crate `rand`: /rustup-home/toolchains/f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-741fce18ecb20d83.rlib
Sep 10 13:46:19.233 INFO kablam! 
Sep 10 13:46:19.233 INFO kablam! error[E0463]: can't find crate for `rand`
Sep 10 13:46:19.233 INFO kablam!  --> benches/gcd.rs:7:1
Sep 10 13:46:19.233 INFO kablam!   |
Sep 10 13:46:19.233 INFO kablam! 7 | extern crate rand;
Sep 10 13:46:19.233 INFO kablam!   | ^^^^^^^^^^^^^^^^^^ can't find crate
Sep 10 13:46:19.233 INFO kablam! 
Sep 10 13:46:19.233 INFO kablam! error: aborting due to 2 previous errors
Sep 10 13:46:19.233 INFO kablam! 
Sep 10 13:46:19.233 INFO kablam! Some errors occurred: E0463, E0464.
Sep 10 13:46:19.233 INFO kablam! For more information about an error, try `rustc --explain E0463`.
Sep 10 13:46:19.243 INFO kablam! error: Could not compile `num-bigint`.
Sep 10 13:46:19.243 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 13:46:19.483 INFO kablam! error[E0464]: multiple matching crates for `rand`
Sep 10 13:46:19.483 INFO kablam!  --> benches/bigint.rs:6:1
Sep 10 13:46:19.483 INFO kablam!   |
Sep 10 13:46:19.483 INFO kablam! 6 | extern crate rand;
Sep 10 13:46:19.483 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 10 13:46:19.483 INFO kablam!   |
Sep 10 13:46:19.483 INFO kablam!   = note: candidates:
Sep 10 13:46:19.483 INFO kablam!           crate `rand`: /rustup-home/toolchains/f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-4085472da6991927.rlib
Sep 10 13:46:19.483 INFO kablam!           crate `rand`: /rustup-home/toolchains/f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-741fce18ecb20d83.rlib
Sep 10 13:46:19.483 INFO kablam! 
Sep 10 13:46:19.483 INFO kablam! error[E0463]: can't find crate for `rand`
Sep 10 13:46:19.483 INFO kablam!  --> benches/bigint.rs:6:1
Sep 10 13:46:19.483 INFO kablam!   |
Sep 10 13:46:19.483 INFO kablam! 6 | extern crate rand;
Sep 10 13:46:19.483 INFO kablam!   | ^^^^^^^^^^^^^^^^^^ can't find crate
Sep 10 13:46:19.483 INFO kablam! 
Sep 10 13:46:19.483 INFO kablam! error: aborting due to 2 previous errors
Sep 10 13:46:19.483 INFO kablam! 
Sep 10 13:46:19.483 INFO kablam! Some errors occurred: E0463, E0464.
Sep 10 13:46:19.483 INFO kablam! For more information about an error, try `rustc --explain E0463`.
Sep 10 13:46:19.486 INFO kablam! error: Could not compile `num-bigint`.
Sep 10 13:46:19.486 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 13:46:21.862 INFO kablam! warning: unused arithmetic operation which must be used
Sep 10 13:46:21.862 INFO kablam!    --> tests/biguint.rs:769:5
Sep 10 13:46:21.862 INFO kablam!     |
Sep 10 13:46:21.862 INFO kablam! 769 |     a - b;
Sep 10 13:46:21.862 INFO kablam!     |     ^^^^^
Sep 10 13:46:21.862 INFO kablam!     |
Sep 10 13:46:21.862 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 13:46:21.862 INFO kablam! 
Sep 10 13:46:21.918 INFO kablam! error: build failed
Sep 10 13:46:21.919 INFO kablam! su: No module specific data is present
Sep 10 13:46:22.446 INFO running `"docker" "rm" "-f" "45d9f4a49dddac8365af327d5ee4776ebd142e1a38530276e50d7e4c5e5bb839"`
Sep 10 13:46:22.522 INFO blam! 45d9f4a49dddac8365af327d5ee4776ebd142e1a38530276e50d7e4c5e5bb839