Sep 10 14:18:59.065 INFO checking mtbl-0.2.1 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 14:18:59.065 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 14:18:59.065 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/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 14:18:59.276 INFO blam! b8f3885b137d1347b7ed6db595a2e3a6cc5728ed52a62654f8702c562f97d9bf
Sep 10 14:18:59.278 INFO running `"docker" "start" "-a" "b8f3885b137d1347b7ed6db595a2e3a6cc5728ed52a62654f8702c562f97d9bf"`
Sep 10 14:19:00.366 INFO kablam! usermod: no changes
Sep 10 14:19:00.442 INFO kablam!     Checking mtbl-sys v0.2.0
Sep 10 14:19:00.446 INFO kablam!     Checking lz4-sys v1.8.0
Sep 10 14:19:00.446 INFO kablam!    Compiling lz4 v1.22.0
Sep 10 14:19:00.879 INFO kablam!     Checking mtbl v0.2.1 (file:///source)
Sep 10 14:19:02.344 INFO kablam! error[E0658]: use of unstable library feature 'test' (see issue #27812)
Sep 10 14:19:02.344 INFO kablam!  --> benches/lib.rs:4:1
Sep 10 14:19:02.344 INFO kablam!   |
Sep 10 14:19:02.344 INFO kablam! 4 | extern crate test;
Sep 10 14:19:02.344 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 10 14:19:02.344 INFO kablam!   |
Sep 10 14:19:02.344 INFO kablam!   = help: add #![feature(test)] to the crate attributes to enable
Sep 10 14:19:02.344 INFO kablam! 
Sep 10 14:19:02.344 INFO kablam! error[E0658]: use of unstable library feature 'test' (see issue #27812)
Sep 10 14:19:02.344 INFO kablam!  --> benches/lib.rs:8:5
Sep 10 14:19:02.344 INFO kablam!   |
Sep 10 14:19:02.344 INFO kablam! 8 | use test::Bencher;
Sep 10 14:19:02.344 INFO kablam!   |     ^^^^^^^^^^^^^
Sep 10 14:19:02.344 INFO kablam!   |
Sep 10 14:19:02.344 INFO kablam!   = help: add #![feature(test)] to the crate attributes to enable
Sep 10 14:19:02.344 INFO kablam! 
Sep 10 14:19:02.344 INFO kablam! error[E0658]: use of unstable library feature 'test' (see issue #27812)
Sep 10 14:19:02.344 INFO kablam!   --> benches/lib.rs:11:26
Sep 10 14:19:02.344 INFO kablam!    |
Sep 10 14:19:02.344 INFO kablam! 11 | fn bench_get(bench: &mut Bencher) {
Sep 10 14:19:02.344 INFO kablam!    |                          ^^^^^^^
Sep 10 14:19:02.344 INFO kablam!    |
Sep 10 14:19:02.344 INFO kablam!    = help: add #![feature(test)] to the crate attributes to enable
Sep 10 14:19:02.344 INFO kablam! 
Sep 10 14:19:02.388 INFO kablam! error[E0658]: use of unstable library feature 'test' (see issue #27812)
Sep 10 14:19:02.388 INFO kablam!   --> benches/lib.rs:25:11
Sep 10 14:19:02.389 INFO kablam!    |
Sep 10 14:19:02.389 INFO kablam! 25 |     bench.iter(|| reader.get(format!("{:09}", range_gen.ind_sample(&mut rng))));
Sep 10 14:19:02.389 INFO kablam!    |           ^^^^
Sep 10 14:19:02.389 INFO kablam!    |
Sep 10 14:19:02.389 INFO kablam!    = help: add #![feature(test)] to the crate attributes to enable
Sep 10 14:19:02.389 INFO kablam! 
Sep 10 14:19:02.397 INFO kablam! error: aborting due to 4 previous errors
Sep 10 14:19:02.397 INFO kablam! 
Sep 10 14:19:02.397 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 14:19:02.405 INFO kablam! error: Could not compile `mtbl`.
Sep 10 14:19:02.405 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 14:19:02.833 INFO kablam! error: build failed
Sep 10 14:19:02.834 INFO kablam! su: No module specific data is present
Sep 10 14:19:03.732 INFO running `"docker" "rm" "-f" "b8f3885b137d1347b7ed6db595a2e3a6cc5728ed52a62654f8702c562f97d9bf"`
Sep 10 14:19:03.819 INFO blam! b8f3885b137d1347b7ed6db595a2e3a6cc5728ed52a62654f8702c562f97d9bf