[INFO] updating cached repository https://github.com/utkarshkukreti/draco
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13f0aae8103584c9d533794493b1e8640cfaa7f0
[INFO] checking utkarshkukreti/draco against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futkarshkukreti%2Fdraco" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/utkarshkukreti/draco on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/utkarshkukreti/draco
[INFO] removed workspace from git repo https://github.com/utkarshkukreti/draco
[INFO] finished tweaking git repo https://github.com/utkarshkukreti/draco
[INFO] tweaked toml for git repo https://github.com/utkarshkukreti/draco written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+d7b51666469c792a8a3f40849607739bae1e705e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 156f2a111b2fc8b61e41c3193ddf5a23a69cb3cc1993983fa01a4dd968c83a9d
[INFO] running `"docker" "start" "-a" "156f2a111b2fc8b61e41c3193ddf5a23a69cb3cc1993983fa01a4dd968c83a9d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.12
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.62
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.62
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.62
[INFO] [stderr]     Checking wasm-bindgen v0.2.62
[INFO] [stderr]     Checking js-sys v0.3.39
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.12
[INFO] [stderr]     Checking web-sys v0.3.39
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.12
[INFO] [stderr]     Checking draco v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `rand`
[INFO] [stderr]  --> benches/../examples/jfb/src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::{
[INFO] [stderr]   |     ^^^^ use of undeclared type or module `rand`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand`
[INFO] [stderr]  --> benches/../examples/jfb/src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::{
[INFO] [stderr]   |     ^^^^ use of undeclared type or module `rand`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `XorShiftRng`
[INFO] [stderr]   --> benches/../examples/jfb/src/lib.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 |             rng: XorShiftRng::from_seed([0; 16]),
[INFO] [stderr]    |                  ^^^^^^^^^^^ use of undeclared type or module `XorShiftRng`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `XorShiftRng` in this scope
[INFO] [stderr]   --> benches/../examples/jfb/src/lib.rs:26:10
[INFO] [stderr]    |
[INFO] [stderr] 26 |     rng: XorShiftRng,
[INFO] [stderr]    |          ^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `draco`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "156f2a111b2fc8b61e41c3193ddf5a23a69cb3cc1993983fa01a4dd968c83a9d"`
[INFO] running `"docker" "rm" "-f" "156f2a111b2fc8b61e41c3193ddf5a23a69cb3cc1993983fa01a4dd968c83a9d"`
[INFO] [stdout] 156f2a111b2fc8b61e41c3193ddf5a23a69cb3cc1993983fa01a4dd968c83a9d