[INFO] updating cached repository mcginty/chanbench
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mcginty/chanbench
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mcginty/chanbench" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mcginty/chanbench"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mcginty/chanbench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mcginty/chanbench" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mcginty/chanbench"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mcginty/chanbench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13130e6421a6bb985dd22a1e8e6e3b38c350847b
[INFO] sha for GitHub repo mcginty/chanbench: 13130e6421a6bb985dd22a1e8e6e3b38c350847b
[INFO] validating manifest of mcginty/chanbench on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mcginty/chanbench on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mcginty/chanbench
[INFO] finished frobbing mcginty/chanbench
[INFO] frobbed toml for mcginty/chanbench written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mcginty/chanbench/Cargo.toml
[INFO] started frobbing mcginty/chanbench
[INFO] finished frobbing mcginty/chanbench
[INFO] frobbed toml for mcginty/chanbench written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mcginty/chanbench/Cargo.toml
[INFO] crate mcginty/chanbench already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mcginty/chanbench against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-1/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mcginty/chanbench:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ca5692cd23e1a0e0c57f4dab02cc06699e9a2f683bfbbddc396ebde1ee32d7e9
[INFO] running `"docker" "start" "-a" "ca5692cd23e1a0e0c57f4dab02cc06699e9a2f683bfbbddc396ebde1ee32d7e9"`
[INFO] [stderr]    Compiling rand_core v0.2.0
[INFO] [stderr]    Compiling subtle v0.6.2
[INFO] [stderr]     Checking subtle v0.5.1
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking rand v0.5.0-pre.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36 (https://github.com/mcginty/rust-crypto#24d8c077)
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]    Compiling snow v0.1.12 (https://github.com/mcginty/snow?branch=wireguard#e2baf82a)
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking crossbeam-channel v0.2.1
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]    Compiling curve25519-dalek v0.17.0
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking x25519-dalek v0.2.0
[INFO] [stderr]     Checking chanbench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:255:17
[INFO] [stderr]     |
[INFO] [stderr] 255 |             let mut tx = tx.clone();
[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:255:17
[INFO] [stderr]     |
[INFO] [stderr] 255 |             let mut tx = tx.clone();
[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 21.78s
[INFO] running `"docker" "inspect" "ca5692cd23e1a0e0c57f4dab02cc06699e9a2f683bfbbddc396ebde1ee32d7e9"`
[INFO] running `"docker" "rm" "-f" "ca5692cd23e1a0e0c57f4dab02cc06699e9a2f683bfbbddc396ebde1ee32d7e9"`
[INFO] [stdout] ca5692cd23e1a0e0c57f4dab02cc06699e9a2f683bfbbddc396ebde1ee32d7e9