[INFO] updating cached repository JWorthe/rust_channels_example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JWorthe/rust_channels_example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JWorthe/rust_channels_example" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/JWorthe/rust_channels_example"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/JWorthe/rust_channels_example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JWorthe/rust_channels_example" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/JWorthe/rust_channels_example"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/JWorthe/rust_channels_example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed566a37fdd74528ded62e2d3b19c3db69bcb297
[INFO] sha for GitHub repo JWorthe/rust_channels_example: ed566a37fdd74528ded62e2d3b19c3db69bcb297
[INFO] validating manifest of JWorthe/rust_channels_example on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of JWorthe/rust_channels_example on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing JWorthe/rust_channels_example
[INFO] finished frobbing JWorthe/rust_channels_example
[INFO] frobbed toml for JWorthe/rust_channels_example written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/JWorthe/rust_channels_example/Cargo.toml
[INFO] started frobbing JWorthe/rust_channels_example
[INFO] finished frobbing JWorthe/rust_channels_example
[INFO] frobbed toml for JWorthe/rust_channels_example written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/JWorthe/rust_channels_example/Cargo.toml
[INFO] crate JWorthe/rust_channels_example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking JWorthe/rust_channels_example against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/JWorthe/rust_channels_example:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 16f33e0a8445f9bac9ed305723e0de57059c39666c9fe350e80c768f26785cb7
[INFO] running `"docker" "start" "-a" "16f33e0a8445f9bac9ed305723e0de57059c39666c9fe350e80c768f26785cb7"`
[INFO] [stderr]     Checking piston-demo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.54s
[INFO] running `"docker" "inspect" "16f33e0a8445f9bac9ed305723e0de57059c39666c9fe350e80c768f26785cb7"`
[INFO] running `"docker" "rm" "-f" "16f33e0a8445f9bac9ed305723e0de57059c39666c9fe350e80c768f26785cb7"`
[INFO] [stdout] 16f33e0a8445f9bac9ed305723e0de57059c39666c9fe350e80c768f26785cb7