[INFO] cloning repository csherratt/rplace.rs
[INFO] running `"git" "clone" "--bare" "git://github.com/csherratt/rplace.rs.git" "work/cache/sources/gh/csherratt/rplace.rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/csherratt/rplace.rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/csherratt/rplace.rs" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/csherratt/rplace.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/csherratt/rplace.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/csherratt/rplace.rs" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/csherratt/rplace.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/csherratt/rplace.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aba62a04dd06ac149d6d565b0b9c4302d10d699a
[INFO] sha for GitHub repo csherratt/rplace.rs: aba62a04dd06ac149d6d565b0b9c4302d10d699a
[INFO] validating manifest of csherratt/rplace.rs on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of csherratt/rplace.rs on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing csherratt/rplace.rs
[INFO] finished frobbing csherratt/rplace.rs
[INFO] frobbed toml for csherratt/rplace.rs written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/csherratt/rplace.rs/Cargo.toml
[INFO] started frobbing csherratt/rplace.rs
[INFO] finished frobbing csherratt/rplace.rs
[INFO] frobbed toml for csherratt/rplace.rs written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/csherratt/rplace.rs/Cargo.toml
[INFO] crate csherratt/rplace.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cgmath v0.13.0
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking csherratt/rplace.rs against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/csherratt/rplace.rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0a8a05164c163b820243ba61a3ce6cff116747d17027a283df34b5417dbf7e06
[INFO] running `"docker" "start" "-a" "0a8a05164c163b820243ba61a3ce6cff116747d17027a283df34b5417dbf7e06"`
[INFO] [stderr]     Checking cgmath v0.13.0
[INFO] [stderr]     Checking csv v0.15.0
[INFO] [stderr]     Checking gfx_window_glutin v0.14.0
[INFO] [stderr]     Checking rplace-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:165:17
[INFO] [stderr]     |
[INFO] [stderr] 165 |             let mut tile = latest.entry(tile_key)
[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/main.rs:169:17
[INFO] [stderr]     |
[INFO] [stderr] 169 |             let mut tile = tiles.entry(tile_key).or_insert_with(Vec::new);
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut tile = tiles.entry(key).or_insert_with(Vec::new);
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:165:17
[INFO] [stderr]     |
[INFO] [stderr] 165 |             let mut tile = latest.entry(tile_key)
[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/main.rs:169:17
[INFO] [stderr]     |
[INFO] [stderr] 169 |             let mut tile = tiles.entry(tile_key).or_insert_with(Vec::new);
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut tile = tiles.entry(key).or_insert_with(Vec::new);
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.71s
[INFO] running `"docker" "inspect" "0a8a05164c163b820243ba61a3ce6cff116747d17027a283df34b5417dbf7e06"`
[INFO] running `"docker" "rm" "-f" "0a8a05164c163b820243ba61a3ce6cff116747d17027a283df34b5417dbf7e06"`
[INFO] [stdout] 0a8a05164c163b820243ba61a3ce6cff116747d17027a283df34b5417dbf7e06