[INFO] cloning repository https://github.com/litetokensdev/mpc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/litetokensdev/mpc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flitetokensdev%2Fmpc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flitetokensdev%2Fmpc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 995422ba3e170deb76c4dea629734b2068c3a2cd
[INFO] checking litetokensdev/mpc against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flitetokensdev%2Fmpc" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/litetokensdev/mpc on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/litetokensdev/mpc
[INFO] finished tweaking git repo https://github.com/litetokensdev/mpc
[INFO] tweaked toml for git repo https://github.com/litetokensdev/mpc written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/litetokensdev/mpc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/zcash-hackworks/sapling-crypto`
[INFO] [stderr]     Updating git repository `https://github.com/gtank/blake2-rfc`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.3
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.3
[INFO] [stderr]   Downloaded generic-array v0.9.1
[INFO] [stderr]   Downloaded hex-literal v0.1.4
[INFO] [stderr]   Downloaded hex-literal-impl v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 41317f4fbaf3a05d54163552ae016b3ef4885e9efa1860831dddf61076d545b4
[INFO] running `Command { std: "docker" "start" "-a" "41317f4fbaf3a05d54163552ae016b3ef4885e9efa1860831dddf61076d545b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41317f4fbaf3a05d54163552ae016b3ef4885e9efa1860831dddf61076d545b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41317f4fbaf3a05d54163552ae016b3ef4885e9efa1860831dddf61076d545b4", kill_on_drop: false }`
[INFO] [stdout] 41317f4fbaf3a05d54163552ae016b3ef4885e9efa1860831dddf61076d545b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTUP_TOOLCHAIN=4a04890980766cc79878135f5ade8c0c4321e943" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6fdec3fac1d7177bf953ddbfa588890cd40e615e0d270f781756d565dc69799
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e6fdec3fac1d7177bf953ddbfa588890cd40e615e0d270f781756d565dc69799", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking pairing v0.14.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stdout] error[E0271]: type mismatch resolving `<std::array::IntoIter<(&<<Self as Engine>::G1Affine as CurveAffine>::Prepared, &<<Self as Engine>::G2Affine as CurveAffine>::Prepared), 1_usize> as IntoIterator>::Item == &(&<<Self as Engine>::G1Affine as CurveAffine>::Prepared, &<<Self as Engine>::G2Affine as CurveAffine>::Prepared)`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pairing-0.14.2/src/lib.rs:106:37
[INFO] [stdout]     |
[INFO] [stdout] 88  | /     fn miller_loop<'a, I>(i: I) -> Self::Fqk
[INFO] [stdout] 89  | |     where
[INFO] [stdout] 90  | |         I: IntoIterator<
[INFO] [stdout] 91  | |             Item = &'a (
[INFO] [stdout] ...   |
[INFO] [stdout] 94  | |             ),
[INFO] [stdout] 95  | |         >;
[INFO] [stdout]     | |__________- required by `Engine::miller_loop`
[INFO] [stdout] ...
[INFO] [stdout] 106 |           Self::final_exponentiation(&Self::miller_loop(
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^ expected reference, found tuple
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&(&<<Self as Engine>::G1Affine as CurveAffine>::Prepared, &<<Self as Engine>::G2Affine as CurveAffine>::Prepared)`
[INFO] [stdout]                     found type `(&<<Self as Engine>::G1Affine as CurveAffine>::Prepared, &<<Self as Engine>::G2Affine as CurveAffine>::Prepared)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0271`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pairing`
[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 `Command { std: "docker" "inspect" "e6fdec3fac1d7177bf953ddbfa588890cd40e615e0d270f781756d565dc69799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6fdec3fac1d7177bf953ddbfa588890cd40e615e0d270f781756d565dc69799", kill_on_drop: false }`
[INFO] [stdout] e6fdec3fac1d7177bf953ddbfa588890cd40e615e0d270f781756d565dc69799