[INFO] crate mon-artist 0.1.3 is already in cache
[INFO] extracting crate mon-artist 0.1.3 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/mon-artist/0.1.3
[INFO] extracting crate mon-artist 0.1.3 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/mon-artist/0.1.3
[INFO] validating manifest of mon-artist-0.1.3 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mon-artist-0.1.3 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mon-artist-0.1.3
[INFO] finished frobbing mon-artist-0.1.3
[INFO] frobbed toml for mon-artist-0.1.3 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/mon-artist/0.1.3/Cargo.toml
[INFO] started frobbing mon-artist-0.1.3
[INFO] finished frobbing mon-artist-0.1.3
[INFO] frobbed toml for mon-artist-0.1.3 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/mon-artist/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mon-artist-0.1.3 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/mon-artist/0.1.3:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cdfaedb7cc7fa8b01b3a3f0e8595565993f2d8990e4a14d3333495960aae262a
[INFO] running `"docker" "start" "-a" "cdfaedb7cc7fa8b01b3a3f0e8595565993f2d8990e4a14d3333495960aae262a"`
[INFO] [stderr]    Compiling tango v0.6.2
[INFO] [stderr]     Checking xml-rs v0.2.2
[INFO] [stderr]    Compiling docopt v0.7.0
[INFO] [stderr]     Checking treexml v0.3.0
[INFO] [stderr] error[E0282]: type annotations needed
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tango-0.6.2/src/lib.rs:259:66
[INFO] [stderr]     |
[INFO] [stderr] 259 |         for c in self.0.components().skip(1) { p.push(c.as_ref().to_str().expect("how else can I replace root?")); }
[INFO] [stderr]     |                                                                  ^^^^^^ cannot infer type for `T`
[INFO] [stderr]     |
[INFO] [stderr]     = note: type must be known at this point
[INFO] [stderr] 
[INFO] [stderr] error[E0282]: type annotations needed
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tango-0.6.2/src/lib.rs:273:66
[INFO] [stderr]     |
[INFO] [stderr] 273 |         for c in self.0.components().skip(1) { p.push(c.as_ref().to_str().expect("how else can I replace root?")); }
[INFO] [stderr]     |                                                                  ^^^^^^ cannot infer type for `T`
[INFO] [stderr]     |
[INFO] [stderr]     = note: type must be known at this point
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0282`.
[INFO] [stderr] error: Could not compile `tango`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "cdfaedb7cc7fa8b01b3a3f0e8595565993f2d8990e4a14d3333495960aae262a"`
[INFO] running `"docker" "rm" "-f" "cdfaedb7cc7fa8b01b3a3f0e8595565993f2d8990e4a14d3333495960aae262a"`
[INFO] [stdout] cdfaedb7cc7fa8b01b3a3f0e8595565993f2d8990e4a14d3333495960aae262a