[INFO] updating cached repository kennytm/rustup-toolchain-install-master
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kennytm/rustup-toolchain-install-master
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kennytm/rustup-toolchain-install-master" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/kennytm/rustup-toolchain-install-master"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/kennytm/rustup-toolchain-install-master'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kennytm/rustup-toolchain-install-master" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/kennytm/rustup-toolchain-install-master"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/kennytm/rustup-toolchain-install-master'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e783c300e2f4e26eeb5eead86be18cbad802cca5
[INFO] sha for GitHub repo kennytm/rustup-toolchain-install-master: e783c300e2f4e26eeb5eead86be18cbad802cca5
[INFO] validating manifest of kennytm/rustup-toolchain-install-master on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kennytm/rustup-toolchain-install-master on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kennytm/rustup-toolchain-install-master
[INFO] finished frobbing kennytm/rustup-toolchain-install-master
[INFO] frobbed toml for kennytm/rustup-toolchain-install-master written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/kennytm/rustup-toolchain-install-master/Cargo.toml
[INFO] started frobbing kennytm/rustup-toolchain-install-master
[INFO] finished frobbing kennytm/rustup-toolchain-install-master
[INFO] frobbed toml for kennytm/rustup-toolchain-install-master written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/kennytm/rustup-toolchain-install-master/Cargo.toml
[INFO] crate kennytm/rustup-toolchain-install-master already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kennytm/rustup-toolchain-install-master against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/kennytm/rustup-toolchain-install-master:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ac9af52038895d66ffbdd52cbe29e0f63dc487df2e9b56d2cb93b6ee58532fbe
[INFO] running `"docker" "start" "-a" "ac9af52038895d66ffbdd52cbe29e0f63dc487df2e9b56d2cb93b6ee58532fbe"`
[INFO] [stderr]    Compiling rustup-toolchain-install-master v1.6.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking home v0.3.3
[INFO] [stderr]     Checking tee v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling lzma-sys v0.1.12
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking backtrace v0.3.12
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking hyper v0.12.18
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.5
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:159:13
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let mut lock = err.lock();
[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:159:13
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let mut lock = err.lock();
[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 19.58s
[INFO] running `"docker" "inspect" "ac9af52038895d66ffbdd52cbe29e0f63dc487df2e9b56d2cb93b6ee58532fbe"`
[INFO] running `"docker" "rm" "-f" "ac9af52038895d66ffbdd52cbe29e0f63dc487df2e9b56d2cb93b6ee58532fbe"`
[INFO] [stdout] ac9af52038895d66ffbdd52cbe29e0f63dc487df2e9b56d2cb93b6ee58532fbe