[INFO] updating cached repository mskwarek/rustchain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mskwarek/rustchain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mskwarek/rustchain" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/mskwarek/rustchain"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/mskwarek/rustchain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mskwarek/rustchain" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/mskwarek/rustchain"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/mskwarek/rustchain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] deb0b15bb8f9b5c3a945c470109734a1560458f8
[INFO] sha for GitHub repo mskwarek/rustchain: deb0b15bb8f9b5c3a945c470109734a1560458f8
[INFO] validating manifest of mskwarek/rustchain on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mskwarek/rustchain on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mskwarek/rustchain
[INFO] finished frobbing mskwarek/rustchain
[INFO] frobbed toml for mskwarek/rustchain written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/mskwarek/rustchain/Cargo.toml
[INFO] started frobbing mskwarek/rustchain
[INFO] finished frobbing mskwarek/rustchain
[INFO] frobbed toml for mskwarek/rustchain written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/mskwarek/rustchain/Cargo.toml
[INFO] crate mskwarek/rustchain already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mskwarek/rustchain against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-0/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/mskwarek/rustchain:/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" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 528c47f4448571fe3c0adefa196307b7da374a22aefb1f208592793f842e9f2d
[INFO] running `"docker" "start" "-a" "528c47f4448571fe3c0adefa196307b7da374a22aefb1f208592793f842e9f2d"`
[INFO] [stderr]     Checking serde v1.0.55
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking uuid v0.6.3
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking regex v1.0.0
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking tokio-io v0.1.8
[INFO] [stderr]     Checking http v0.1.13
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]     Checking tokio v0.1.8
[INFO] [stderr]     Checking pretty_env_logger v0.2.4
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]     Checking hyper v0.12.10
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking rustchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]    --> src/main.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Err(error) => {
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]    --> src/main.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Err(error) => {
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.52s
[INFO] running `"docker" "inspect" "528c47f4448571fe3c0adefa196307b7da374a22aefb1f208592793f842e9f2d"`
[INFO] running `"docker" "rm" "-f" "528c47f4448571fe3c0adefa196307b7da374a22aefb1f208592793f842e9f2d"`
[INFO] [stdout] 528c47f4448571fe3c0adefa196307b7da374a22aefb1f208592793f842e9f2d