[INFO] updating cached repository https://github.com/komalklr/r1cs_gadgets
[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] 749e72de2a40e1389956156aea955f7637bec4cd
[INFO] checking komalklr/r1cs_gadgets against nightly-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkomalklr%2Fr1cs_gadgets" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/komalklr/r1cs_gadgets on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/komalklr/r1cs_gadgets
[INFO] finished tweaking git repo https://github.com/komalklr/r1cs_gadgets
[INFO] tweaked toml for git repo https://github.com/komalklr/r1cs_gadgets written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/komalklr/r1cs_gadgets already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=allow" "-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" "+nightly-2019-10-27" "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] 8fad9c6bc3961f929252ef09d482881a59da7a26c6ee5ba88749e850380f0568
[INFO] running `"docker" "start" "-a" "8fad9c6bc3961f929252ef09d482881a59da7a26c6ee5ba88749e850380f0568"`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling subtle v2.1.1
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking merlin v1.2.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]    Compiling curve25519-dalek v1.2.3
[INFO] [stderr]     Checking bulletproofs v1.0.4 (https://github.com/komalklr/bulletproofs.git#9345daad)
[INFO] [stderr]     Checking practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> tests/r1cs_utils.rs:45:28
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let bit: u64 = (q >> 63) & 1;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^ expected u64, found i64
[INFO] [stderr]    |
[INFO] [stderr] help: you can convert an `i64` to `u64` and panic if the converted value wouldn't fit
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let bit: u64 = ((q >> 63) & 1).try_into().unwrap();
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `practice`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8fad9c6bc3961f929252ef09d482881a59da7a26c6ee5ba88749e850380f0568"`
[INFO] running `"docker" "rm" "-f" "8fad9c6bc3961f929252ef09d482881a59da7a26c6ee5ba88749e850380f0568"`
[INFO] [stdout] 8fad9c6bc3961f929252ef09d482881a59da7a26c6ee5ba88749e850380f0568