[INFO] cloning repository https://github.com/DrPeterVanNostrand/joux_bls12_381
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DrPeterVanNostrand/joux_bls12_381" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrPeterVanNostrand%2Fjoux_bls12_381", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrPeterVanNostrand%2Fjoux_bls12_381'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8fdc8178218f58948d2e1c3cf4ac4838def1dd38
[INFO] checking DrPeterVanNostrand/joux_bls12_381 against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrPeterVanNostrand%2Fjoux_bls12_381" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DrPeterVanNostrand/joux_bls12_381 on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DrPeterVanNostrand/joux_bls12_381
[INFO] finished tweaking git repo https://github.com/DrPeterVanNostrand/joux_bls12_381
[INFO] tweaked toml for git repo https://github.com/DrPeterVanNostrand/joux_bls12_381 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/DrPeterVanNostrand/joux_bls12_381 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/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[INFO] the lockfile is outdated, regenerating it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" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bde8c09d520cb3465897e89ba0237123f07cce049d6510e37f5ae4764654ace
[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" "5bde8c09d520cb3465897e89ba0237123f07cce049d6510e37f5ae4764654ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bde8c09d520cb3465897e89ba0237123f07cce049d6510e37f5ae4764654ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bde8c09d520cb3465897e89ba0237123f07cce049d6510e37f5ae4764654ace", kill_on_drop: false }`
[INFO] [stdout] 5bde8c09d520cb3465897e89ba0237123f07cce049d6510e37f5ae4764654ace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 5f4d10e84b25a2cb065e453bea3cb1dab5ffe579c37a86729f2f7177ae5fb278
[INFO] running `Command { std: "docker" "start" "-a" "5f4d10e84b25a2cb065e453bea3cb1dab5ffe579c37a86729f2f7177ae5fb278", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking pairing v0.14.2
[INFO] [stderr]     Checking joux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.38s
[INFO] running `Command { std: "docker" "inspect" "5f4d10e84b25a2cb065e453bea3cb1dab5ffe579c37a86729f2f7177ae5fb278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4d10e84b25a2cb065e453bea3cb1dab5ffe579c37a86729f2f7177ae5fb278", kill_on_drop: false }`
[INFO] [stdout] 5f4d10e84b25a2cb065e453bea3cb1dab5ffe579c37a86729f2f7177ae5fb278