[INFO] updating cached repository Vurich/sexpress
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Vurich/sexpress
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Vurich/sexpress" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Vurich/sexpress"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Vurich/sexpress'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Vurich/sexpress" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Vurich/sexpress"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Vurich/sexpress'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce998ca0b7f5d4a7f02f800612cd2b72f26d4a14
[INFO] sha for GitHub repo Vurich/sexpress: ce998ca0b7f5d4a7f02f800612cd2b72f26d4a14
[INFO] validating manifest of Vurich/sexpress on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Vurich/sexpress on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Vurich/sexpress
[INFO] finished frobbing Vurich/sexpress
[INFO] frobbed toml for Vurich/sexpress written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Vurich/sexpress/Cargo.toml
[INFO] started frobbing Vurich/sexpress
[INFO] finished frobbing Vurich/sexpress
[INFO] frobbed toml for Vurich/sexpress written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Vurich/sexpress/Cargo.toml
[INFO] crate Vurich/sexpress already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Vurich/sexpress against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-7/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Vurich/sexpress:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f79a09db79dab76eb081a93b526e88f654da71dbbccd9be30c4179ba59cdb5ee
[INFO] running `"docker" "start" "-a" "f79a09db79dab76eb081a93b526e88f654da71dbbccd9be30c4179ba59cdb5ee"`
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking memmap v0.6.1
[INFO] [stderr]     Checking toolshed v0.4.0 (https://github.com/Vurich/toolshed.git?branch=set-tools#c6f16dbe)
[INFO] [stderr]     Checking sexpress v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:418:21
[INFO] [stderr]     |
[INFO] [stderr] 418 |                 let mut without_backslashes = arena.require(bytes.len());
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:418:21
[INFO] [stderr]     |
[INFO] [stderr] 418 |                 let mut without_backslashes = arena.require(bytes.len());
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `"docker" "inspect" "f79a09db79dab76eb081a93b526e88f654da71dbbccd9be30c4179ba59cdb5ee"`
[INFO] running `"docker" "rm" "-f" "f79a09db79dab76eb081a93b526e88f654da71dbbccd9be30c4179ba59cdb5ee"`
[INFO] [stdout] f79a09db79dab76eb081a93b526e88f654da71dbbccd9be30c4179ba59cdb5ee