[INFO] crate indextree 4.0.0 is already in cache
[INFO] testing indextree-4.0.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate indextree 4.0.0 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate indextree 4.0.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate indextree 4.0.0
[INFO] removed 2 missing examples
[INFO] finished tweaking crates.io crate indextree 4.0.0
[INFO] tweaked toml for crates.io crate indextree 4.0.0 written to work/builds/worker-1/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 703f3da480da66f7daa2d1e48eb505e52a7ebf4132cfc7154d4fccf3261cc923
[INFO] running `"docker" "start" "-a" "703f3da480da66f7daa2d1e48eb505e52a7ebf4132cfc7154d4fccf3261cc923"`
[INFO] [stderr]    Compiling indextree v4.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "703f3da480da66f7daa2d1e48eb505e52a7ebf4132cfc7154d4fccf3261cc923"`
[INFO] running `"docker" "rm" "-f" "703f3da480da66f7daa2d1e48eb505e52a7ebf4132cfc7154d4fccf3261cc923"`
[INFO] [stdout] 703f3da480da66f7daa2d1e48eb505e52a7ebf4132cfc7154d4fccf3261cc923
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 97cb3b42bb872df3e26cdf4a16d6a51097ca6ff9d9add09b1ed90e679588538c
[INFO] running `"docker" "start" "-a" "97cb3b42bb872df3e26cdf4a16d6a51097ca6ff9d9add09b1ed90e679588538c"`
[INFO] [stderr]    Compiling indextree v4.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `rayon`
[INFO] [stderr]  --> examples/parallel_iteration.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rayon::prelude::*;
[INFO] [stderr]   |     ^^^^^ use of undeclared type or module `rayon`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `par_iter` found for type `&mut indextree::arena::Arena<{integer}>` in the current scope
[INFO] [stderr]   --> examples/parallel_iteration.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 |         .par_iter()
[INFO] [stderr]    |          ^^^^^^^^ method not found in `&mut indextree::arena::Arena<{integer}>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `indextree`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "97cb3b42bb872df3e26cdf4a16d6a51097ca6ff9d9add09b1ed90e679588538c"`
[INFO] running `"docker" "rm" "-f" "97cb3b42bb872df3e26cdf4a16d6a51097ca6ff9d9add09b1ed90e679588538c"`
[INFO] [stdout] 97cb3b42bb872df3e26cdf4a16d6a51097ca6ff9d9add09b1ed90e679588538c