Nov 01 16:11:20.919 INFO checking simple_json-0.2.3 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 16:11:20.919 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-7/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Nov 01 16:11:21.120 INFO blam! 4f5630637d65c1cd1da67559d2dcf77a417e263c5924092fe39dc5343d8a0b80
Nov 01 16:11:21.122 INFO running `"docker" "start" "-a" "4f5630637d65c1cd1da67559d2dcf77a417e263c5924092fe39dc5343d8a0b80"`
Nov 01 16:11:21.572 INFO kablam! usermod: no changes
Nov 01 16:11:21.607 INFO kablam!     Checking simple_json v0.2.3 (/source)
Nov 01 16:11:23.200 INFO kablam! warning: unused import: `Number`
Nov 01 16:11:23.200 INFO kablam!  --> tests/to_string.rs:4:26
Nov 01 16:11:23.200 INFO kablam!   |
Nov 01 16:11:23.200 INFO kablam! 4 | use simple_json::{ Json, Number };
Nov 01 16:11:23.200 INFO kablam!   |                          ^^^^^^
Nov 01 16:11:23.200 INFO kablam!   |
Nov 01 16:11:23.200 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 16:11:23.200 INFO kablam! 
Nov 01 16:11:24.576 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.97s
Nov 01 16:11:24.588 INFO kablam! su: No module specific data is present
Nov 01 16:11:24.913 INFO running `"docker" "rm" "-f" "4f5630637d65c1cd1da67559d2dcf77a417e263c5924092fe39dc5343d8a0b80"`
Nov 01 16:11:25.080 INFO blam! 4f5630637d65c1cd1da67559d2dcf77a417e263c5924092fe39dc5343d8a0b80