[INFO] updating cached repository seunlanlege/arc-reactor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/seunlanlege/arc-reactor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/seunlanlege/arc-reactor" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/seunlanlege/arc-reactor"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/seunlanlege/arc-reactor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/seunlanlege/arc-reactor" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/seunlanlege/arc-reactor"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/seunlanlege/arc-reactor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b81a4bee53ee630fd67d64a11d96e0afad593895
[INFO] sha for GitHub repo seunlanlege/arc-reactor: b81a4bee53ee630fd67d64a11d96e0afad593895
[INFO] validating manifest of seunlanlege/arc-reactor on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of seunlanlege/arc-reactor on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing seunlanlege/arc-reactor
[INFO] removed path dependency futures-await from seunlanlege/arc-reactor
[INFO] removed path dependency impl-service from seunlanlege/arc-reactor
[INFO] finished frobbing seunlanlege/arc-reactor
[INFO] frobbed toml for seunlanlege/arc-reactor written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/seunlanlege/arc-reactor/Cargo.toml
[INFO] started frobbing seunlanlege/arc-reactor
[INFO] removed path dependency futures-await from seunlanlege/arc-reactor
[INFO] removed path dependency impl-service from seunlanlege/arc-reactor
[INFO] finished frobbing seunlanlege/arc-reactor
[INFO] frobbed toml for seunlanlege/arc-reactor written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/seunlanlege/arc-reactor/Cargo.toml
[INFO] crate seunlanlege/arc-reactor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/seunlanlege/arc-reactor/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking seunlanlege/arc-reactor against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-3/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/seunlanlege/arc-reactor:/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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4f693f7998f6a0e091e358f4ab1d2f5c847be6cf475471debecafe098f41789d
[INFO] running `"docker" "start" "-a" "4f693f7998f6a0e091e358f4ab1d2f5c847be6cf475471debecafe098f41789d"`
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking native-tls v0.1.5
[INFO] [stderr]     Checking hyperx v0.13.2
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking h2 v0.1.20
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.20
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-tls v0.1.4
[INFO] [stderr]     Checking hyper v0.12.29
[INFO] [stderr]     Checking arc-reactor v0.2.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/contrib/staticFileServer.rs:109:16
[INFO] [stderr]     |
[INFO] [stderr] 109 |                                             let mut res = Response::new().with_status(404);
[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/contrib/staticFileServer.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |                                             let mut res = Response::new().with_status(500);
[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/routing/routegroup.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 let mut handler = ArcHandler {
[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/contrib/staticFileServer.rs:109:16
[INFO] [stderr]     |
[INFO] [stderr] 109 |                                             let mut res = Response::new().with_status(404);
[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/contrib/staticFileServer.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |                                             let mut res = Response::new().with_status(500);
[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/routing/routegroup.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 let mut handler = ArcHandler {
[INFO] [stderr]    |                     ----^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.10s
[INFO] running `"docker" "inspect" "4f693f7998f6a0e091e358f4ab1d2f5c847be6cf475471debecafe098f41789d"`
[INFO] running `"docker" "rm" "-f" "4f693f7998f6a0e091e358f4ab1d2f5c847be6cf475471debecafe098f41789d"`
[INFO] [stdout] 4f693f7998f6a0e091e358f4ab1d2f5c847be6cf475471debecafe098f41789d