Oct 13 11:26:30.841 INFO checking num-bigint-0.2.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 11:26:30.843 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 11:26:31.120 INFO blam! 43f7bb76e60a6aed1829c6d585cab8c9037513dd9ad9153bedd6d6c829792d52
Oct 13 11:26:31.129 INFO running `"docker" "start" "-a" "43f7bb76e60a6aed1829c6d585cab8c9037513dd9ad9153bedd6d6c829792d52"`
Oct 13 11:26:31.970 INFO kablam! usermod: no changes
Oct 13 11:26:32.072 INFO kablam!    Compiling num-bigint v0.2.0 (/source)
Oct 13 11:26:44.286 INFO kablam! error[E0464]: multiple matching crates for `rand`
Oct 13 11:26:44.286 INFO kablam!  --> benches/gcd.rs:7:1
Oct 13 11:26:44.287 INFO kablam!   |
Oct 13 11:26:44.287 INFO kablam! 7 | extern crate rand;
Oct 13 11:26:44.288 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Oct 13 11:26:44.300 INFO kablam!   |
Oct 13 11:26:44.300 INFO kablam!   = note: candidates:
Oct 13 11:26:44.300 INFO kablam!           crate `rand`: /rustup-home/toolchains/4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-98644cf7533c919e.rlib
Oct 13 11:26:44.300 INFO kablam!           crate `rand`: /rustup-home/toolchains/4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-ff9b3d8303255602.rlib
Oct 13 11:26:44.301 INFO kablam! 
Oct 13 11:26:44.302 INFO kablam! error[E0463]: can't find crate for `rand`
Oct 13 11:26:44.302 INFO kablam!  --> benches/gcd.rs:7:1
Oct 13 11:26:44.302 INFO kablam!   |
Oct 13 11:26:44.302 INFO kablam! 7 | extern crate rand;
Oct 13 11:26:44.303 INFO kablam!   | ^^^^^^^^^^^^^^^^^^ can't find crate
Oct 13 11:26:44.303 INFO kablam! 
Oct 13 11:26:44.333 INFO kablam! error: aborting due to 2 previous errors
Oct 13 11:26:44.333 INFO kablam! 
Oct 13 11:26:44.333 INFO kablam! Some errors occurred: E0463, E0464.
Oct 13 11:26:44.333 INFO kablam! For more information about an error, try `rustc --explain E0463`.
Oct 13 11:26:44.372 INFO kablam! error: Could not compile `num-bigint`.
Oct 13 11:26:44.372 INFO kablam! warning: build failed, waiting for other jobs to finish...
Oct 13 11:26:49.044 INFO kablam! warning: unused arithmetic operation which must be used
Oct 13 11:26:49.044 INFO kablam!    --> tests/biguint.rs:769:5
Oct 13 11:26:49.044 INFO kablam!     |
Oct 13 11:26:49.044 INFO kablam! 769 |     a - b;
Oct 13 11:26:49.044 INFO kablam!     |     ^^^^^
Oct 13 11:26:49.044 INFO kablam!     |
Oct 13 11:26:49.044 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 13 11:26:49.044 INFO kablam! 
Oct 13 11:26:50.460 INFO kablam! error: build failed
Oct 13 11:26:50.460 INFO kablam! su: No module specific data is present
Oct 13 11:26:51.032 INFO running `"docker" "rm" "-f" "43f7bb76e60a6aed1829c6d585cab8c9037513dd9ad9153bedd6d6c829792d52"`
Oct 13 11:26:51.371 INFO blam! 43f7bb76e60a6aed1829c6d585cab8c9037513dd9ad9153bedd6d6c829792d52