Nov 01 20:52:55.064 INFO checking json_errors-0.1.10 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 20:52:55.064 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 20:52:55.344 INFO blam! 27c16770a3f9d09a20728787e477e99bfdad67fc9bb24c0a5f3c42054af76a42
Nov 01 20:52:55.349 INFO running `"docker" "start" "-a" "27c16770a3f9d09a20728787e477e99bfdad67fc9bb24c0a5f3c42054af76a42"`
Nov 01 20:52:56.148 INFO kablam! usermod: no changes
Nov 01 20:52:56.402 INFO kablam!     Checking rocket_contrib v0.3.17
Nov 01 20:52:59.624 INFO kablam!     Checking json_errors v0.1.10 (/source)
Nov 01 20:53:04.864 INFO kablam! warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Nov 01 20:53:04.864 INFO kablam!  --> src/lib.rs:1:12
Nov 01 20:53:04.864 INFO kablam!   |
Nov 01 20:53:04.864 INFO kablam! 1 | #![feature(extern_prelude)]
Nov 01 20:53:04.864 INFO kablam!   |            ^^^^^^^^^^^^^^
Nov 01 20:53:04.864 INFO kablam!   |
Nov 01 20:53:04.864 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 01 20:53:04.864 INFO kablam! 
Nov 01 20:53:05.064 INFO kablam! warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
Nov 01 20:53:05.064 INFO kablam!  --> src/lib.rs:1:12
Nov 01 20:53:05.064 INFO kablam!   |
Nov 01 20:53:05.064 INFO kablam! 1 | #![feature(extern_prelude)]
Nov 01 20:53:05.064 INFO kablam!   |            ^^^^^^^^^^^^^^
Nov 01 20:53:05.064 INFO kablam!   |
Nov 01 20:53:05.064 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 01 20:53:05.064 INFO kablam! 
Nov 01 20:53:05.106 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.93s
Nov 01 20:53:05.126 INFO kablam! su: No module specific data is present
Nov 01 20:53:05.763 INFO running `"docker" "rm" "-f" "27c16770a3f9d09a20728787e477e99bfdad67fc9bb24c0a5f3c42054af76a42"`
Nov 01 20:53:06.054 INFO blam! 27c16770a3f9d09a20728787e477e99bfdad67fc9bb24c0a5f3c42054af76a42