Nov 28 08:20:02.619 INFO checking brson/coingrab against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 08:20:02.621 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 28 08:20:03.024 INFO [stdout] 074f60386173cf55f8491ce60039ee1e77ec8c4037a8c242ec2ee26f78808498
Nov 28 08:20:03.029 INFO running `"docker" "start" "-a" "074f60386173cf55f8491ce60039ee1e77ec8c4037a8c242ec2ee26f78808498"`
Nov 28 08:20:04.053 INFO [stderr] usermod: no changes
Nov 28 08:20:04.380 INFO [stderr]    Compiling openssl-sys v0.9.13
Nov 28 08:20:04.380 INFO [stderr]     Checking fs2 v0.4.1
Nov 28 08:20:04.388 INFO [stderr]     Checking libflate v0.1.7
Nov 28 08:20:04.388 INFO [stderr]     Checking toml v0.4.1
Nov 28 08:20:04.404 INFO [stderr]     Checking tempdir v0.3.5
Nov 28 08:20:04.432 INFO [stderr]    Compiling serde_derive v1.0.8
Nov 28 08:20:04.432 INFO [stderr]     Checking serde_urlencoded v0.5.1
Nov 28 08:20:04.453 INFO [stderr]     Checking chrono v0.3.1
Nov 28 08:20:06.181 INFO [stderr]     Checking fancy_flocks v0.1.0 (/source/fancy_flocks)
Nov 28 08:20:06.824 INFO [stderr]     Checking html5ever v0.14.1
Nov 28 08:20:08.604 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:20:08.604 INFO [stderr]    --> fancy_flocks/src/dirty_flock.rs:111:13
Nov 28 08:20:08.605 INFO [stderr]     |
Nov 28 08:20:08.605 INFO [stderr] 111 |         let mut file = file.deref_mut().as_mut().expect("locked file");
Nov 28 08:20:08.605 INFO [stderr]     |             ----^^^^
Nov 28 08:20:08.605 INFO [stderr]     |             |
Nov 28 08:20:08.605 INFO [stderr]     |             help: remove this `mut`
Nov 28 08:20:08.606 INFO [stderr]     |
Nov 28 08:20:08.606 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 08:20:08.606 INFO [stderr] 
Nov 28 08:20:08.606 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:20:08.606 INFO [stderr]    --> fancy_flocks/src/dirty_flock.rs:123:17
Nov 28 08:20:08.606 INFO [stderr]     |
Nov 28 08:20:08.607 INFO [stderr] 123 |             let mut file = file_.deref_mut().as_mut().expect("locked file");
Nov 28 08:20:08.607 INFO [stderr]     |                 ----^^^^
Nov 28 08:20:08.607 INFO [stderr]     |                 |
Nov 28 08:20:08.607 INFO [stderr]     |                 help: remove this `mut`
Nov 28 08:20:08.624 INFO [stderr] 
Nov 28 08:20:12.094 INFO [stderr]    Compiling openssl v0.9.13
Nov 28 08:20:21.117 INFO [stderr]     Checking native-tls v0.1.2
Nov 28 08:20:23.068 INFO [stderr]     Checking hyper-native-tls v0.2.4
Nov 28 08:20:24.980 INFO [stderr]     Checking select v0.4.0
Nov 28 08:20:27.465 INFO [stderr]     Checking reqwest v0.6.2
Nov 28 08:20:29.196 INFO [stderr]     Checking coingrab v0.1.0 (/source)
Nov 28 08:20:40.896 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.81s
Nov 28 08:20:40.921 INFO [stderr] su: No module specific data is present
Nov 28 08:20:41.939 INFO running `"docker" "inspect" "074f60386173cf55f8491ce60039ee1e77ec8c4037a8c242ec2ee26f78808498"`
Nov 28 08:20:42.247 INFO running `"docker" "rm" "-f" "074f60386173cf55f8491ce60039ee1e77ec8c4037a8c242ec2ee26f78808498"`
Nov 28 08:20:42.672 INFO [stdout] 074f60386173cf55f8491ce60039ee1e77ec8c4037a8c242ec2ee26f78808498