Oct 13 00:06:41.824 INFO checking brson/coingrab against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 00:06:41.826 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 00:06:42.413 INFO blam! 247f66c2500f49329865e3f74aad6550c6e20dc44b73b11d55c47811ee8299ad
Oct 13 00:06:42.414 INFO running `"docker" "start" "-a" "247f66c2500f49329865e3f74aad6550c6e20dc44b73b11d55c47811ee8299ad"`
Oct 13 00:06:44.209 INFO kablam! usermod: no changes
Oct 13 00:06:44.496 INFO kablam!    Compiling openssl v0.9.13
Oct 13 00:06:44.504 INFO kablam!    Compiling openssl-sys v0.9.13
Oct 13 00:06:44.504 INFO kablam!     Checking utf-8 v0.6.0
Oct 13 00:06:44.504 INFO kablam!     Checking fs2 v0.4.1
Oct 13 00:06:44.504 INFO kablam!     Checking libflate v0.1.7
Oct 13 00:06:44.505 INFO kablam!     Checking tempdir v0.3.5
Oct 13 00:06:44.505 INFO kablam!    Compiling string_cache_codegen v0.3.1
Oct 13 00:06:44.507 INFO kablam!    Compiling serde_derive_internals v0.15.1
Oct 13 00:06:46.336 INFO kablam!    Compiling html5ever v0.14.1
Oct 13 00:06:46.881 INFO kablam!     Checking serde_urlencoded v0.5.1
Oct 13 00:06:47.348 INFO kablam!     Checking tendril v0.2.4
Oct 13 00:06:52.148 INFO kablam!     Checking chrono v0.3.1
Oct 13 00:06:58.784 INFO kablam!     Checking fancy_flocks v0.1.0 (/source/fancy_flocks)
Oct 13 00:06:59.057 INFO kablam!    Compiling string_cache v0.4.0
Oct 13 00:07:02.573 INFO kablam!    Compiling html5ever-atoms v0.2.2
Oct 13 00:07:02.753 INFO kablam! warning: variable does not need to be mutable
Oct 13 00:07:02.753 INFO kablam!    --> fancy_flocks/src/dirty_flock.rs:111:13
Oct 13 00:07:02.754 INFO kablam!     |
Oct 13 00:07:02.754 INFO kablam! 111 |         let mut file = file.deref_mut().as_mut().expect("locked file");
Oct 13 00:07:02.754 INFO kablam!     |             ----^^^^
Oct 13 00:07:02.754 INFO kablam!     |             |
Oct 13 00:07:02.755 INFO kablam!     |             help: remove this `mut`
Oct 13 00:07:02.768 INFO kablam!     |
Oct 13 00:07:02.769 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 00:07:02.769 INFO kablam! 
Oct 13 00:07:02.769 INFO kablam! warning: variable does not need to be mutable
Oct 13 00:07:02.770 INFO kablam!    --> fancy_flocks/src/dirty_flock.rs:123:17
Oct 13 00:07:02.770 INFO kablam!     |
Oct 13 00:07:02.770 INFO kablam! 123 |             let mut file = file_.deref_mut().as_mut().expect("locked file");
Oct 13 00:07:02.771 INFO kablam!     |                 ----^^^^
Oct 13 00:07:02.771 INFO kablam!     |                 |
Oct 13 00:07:02.771 INFO kablam!     |                 help: remove this `mut`
Oct 13 00:07:02.822 INFO kablam! 
Oct 13 00:07:03.048 INFO kablam!    Compiling serde_derive v1.0.8
Oct 13 00:07:15.404 INFO kablam!     Checking native-tls v0.1.2
Oct 13 00:07:17.401 INFO kablam!     Checking hyper-native-tls v0.2.4
Oct 13 00:07:20.805 INFO kablam!     Checking reqwest v0.6.2
Oct 13 00:07:25.440 INFO kablam!     Checking select v0.4.0
Oct 13 00:07:27.264 INFO kablam!     Checking coingrab v0.1.0 (/source)
Oct 13 00:07:45.305 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
Oct 13 00:07:45.337 INFO kablam! su: No module specific data is present
Oct 13 00:07:46.844 INFO running `"docker" "rm" "-f" "247f66c2500f49329865e3f74aad6550c6e20dc44b73b11d55c47811ee8299ad"`
Oct 13 00:07:47.228 INFO blam! 247f66c2500f49329865e3f74aad6550c6e20dc44b73b11d55c47811ee8299ad