[INFO] cloning repository veandco/git-ez
[INFO] running `"git" "clone" "--bare" "git://github.com/veandco/git-ez.git" "work/cache/sources/gh/veandco/git-ez"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/veandco/git-ez'...
[INFO] running `"git" "clone" "work/cache/sources/gh/veandco/git-ez" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/veandco/git-ez"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/veandco/git-ez'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/veandco/git-ez" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/veandco/git-ez"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/veandco/git-ez'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 08ff4cd3007b7082e76b104ed78bcde2bfe79748
[INFO] sha for GitHub repo veandco/git-ez: 08ff4cd3007b7082e76b104ed78bcde2bfe79748
[INFO] validating manifest of veandco/git-ez 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 veandco/git-ez 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 veandco/git-ez
[INFO] finished frobbing veandco/git-ez
[INFO] frobbed toml for veandco/git-ez written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/veandco/git-ez/Cargo.toml
[INFO] started frobbing veandco/git-ez
[INFO] finished frobbing veandco/git-ez
[INFO] frobbed toml for veandco/git-ez written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/veandco/git-ez/Cargo.toml
[INFO] crate veandco/git-ez 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 syn v0.15.5
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking veandco/git-ez against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/veandco/git-ez:/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ef973268bce677ff786eb74907e9a4fd64f0e77e46c85751056dc9934c3713a0
[INFO] running `"docker" "start" "-a" "ef973268bce677ff786eb74907e9a4fd64f0e77e46c85751056dc9934c3713a0"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]     Checking dirs v1.0.3
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.5
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking git-ez v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:193:17
[INFO] [stderr]     |
[INFO] [stderr] 193 |             let mut user = matching_user_from_config(name, email, &mut config);
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:193:17
[INFO] [stderr]     |
[INFO] [stderr] 193 |             let mut user = matching_user_from_config(name, email, &mut config);
[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:194:25
[INFO] [stderr]     |
[INFO] [stderr] 194 |             if let Some(mut user) = user {
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[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:194:25
[INFO] [stderr]     |
[INFO] [stderr] 194 |             if let Some(mut user) = user {
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.15s
[INFO] running `"docker" "inspect" "ef973268bce677ff786eb74907e9a4fd64f0e77e46c85751056dc9934c3713a0"`
[INFO] running `"docker" "rm" "-f" "ef973268bce677ff786eb74907e9a4fd64f0e77e46c85751056dc9934c3713a0"`
[INFO] [stdout] ef973268bce677ff786eb74907e9a4fd64f0e77e46c85751056dc9934c3713a0