[INFO] updating cached repository snowkeep/rovcommand
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/snowkeep/rovcommand
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/snowkeep/rovcommand" "work/ex/beta-1.38-1/sources/1.37.0/gh/snowkeep/rovcommand"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/snowkeep/rovcommand'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/snowkeep/rovcommand" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snowkeep/rovcommand"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snowkeep/rovcommand'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 73046c245eb7efc0d0f99b7f7fc43a3768d4c3a6
[INFO] sha for GitHub repo snowkeep/rovcommand: 73046c245eb7efc0d0f99b7f7fc43a3768d4c3a6
[INFO] validating manifest of snowkeep/rovcommand on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of snowkeep/rovcommand on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing snowkeep/rovcommand
[INFO] finished frobbing snowkeep/rovcommand
[INFO] frobbed toml for snowkeep/rovcommand written to work/ex/beta-1.38-1/sources/1.37.0/gh/snowkeep/rovcommand/Cargo.toml
[INFO] started frobbing snowkeep/rovcommand
[INFO] finished frobbing snowkeep/rovcommand
[INFO] frobbed toml for snowkeep/rovcommand written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snowkeep/rovcommand/Cargo.toml
[INFO] crate snowkeep/rovcommand already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snowkeep/rovcommand against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snowkeep/rovcommand:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 581df4dcfa162c5516e25d61e86da700383295ce41762cc60ce86e2f3813c12f
[INFO] running `"docker" "start" "-a" "581df4dcfa162c5516e25d61e86da700383295ce41762cc60ce86e2f3813c12f"`
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling x11-dl v2.12.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.8
[INFO] [stderr]    Compiling petgraph v0.2.9
[INFO] [stderr]    Compiling wayland-scanner v0.7.7
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.2.9/src/graph.rs:421:17
[INFO] [stderr]     |
[INFO] [stderr] 421 |         assert!(Ix::max().index() == !0 || NodeIndex::end() != node_idx);
[INFO] [stderr]     |                 ^^^^^^^ multiple `max` found
[INFO] [stderr]     |
[INFO] [stderr] note: candidate #1 is defined in the trait `graph::IndexType`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.2.9/src/graph.rs:31:5
[INFO] [stderr]     |
[INFO] [stderr] 31  |     fn max() -> Self;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: to disambiguate the method call, write `graph::IndexType::max(...)` instead
[INFO] [stderr] note: candidate #2 is defined in the trait `std::cmp::Ord`
[INFO] [stderr]     = help: to disambiguate the method call, write `std::cmp::Ord::max(...)` instead
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.2.9/src/graph.rs:458:17
[INFO] [stderr]     |
[INFO] [stderr] 458 |         assert!(Ix::max().index() == !0 || EdgeIndex::end() != edge_idx);
[INFO] [stderr]     |                 ^^^^^^^ multiple `max` found
[INFO] [stderr]     |
[INFO] [stderr] note: candidate #1 is defined in the trait `graph::IndexType`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/petgraph-0.2.9/src/graph.rs:31:5
[INFO] [stderr]     |
[INFO] [stderr] 31  |     fn max() -> Self;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: to disambiguate the method call, write `graph::IndexType::max(...)` instead
[INFO] [stderr] note: candidate #2 is defined in the trait `std::cmp::Ord`
[INFO] [stderr]     = help: to disambiguate the method call, write `std::cmp::Ord::max(...)` instead
[INFO] [stderr] 
[INFO] [stderr]    Compiling tempfile v2.1.5
[INFO] [stderr]    Compiling pistoncore-input v0.17.1
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0034`.
[INFO] [stderr] error: Could not compile `petgraph`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "581df4dcfa162c5516e25d61e86da700383295ce41762cc60ce86e2f3813c12f"`
[INFO] running `"docker" "rm" "-f" "581df4dcfa162c5516e25d61e86da700383295ce41762cc60ce86e2f3813c12f"`
[INFO] [stdout] 581df4dcfa162c5516e25d61e86da700383295ce41762cc60ce86e2f3813c12f