[INFO] cloning repository https://github.com/kobigurk/pairing-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kobigurk/pairing-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkobigurk%2Fpairing-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkobigurk%2Fpairing-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39ca0b99e910e4b3ec69324d7f32e49defeae124
[INFO] checking kobigurk/pairing-demo against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkobigurk%2Fpairing-demo" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kobigurk/pairing-demo on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kobigurk/pairing-demo
[INFO] finished tweaking git repo https://github.com/kobigurk/pairing-demo
[INFO] tweaked toml for git repo https://github.com/kobigurk/pairing-demo written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kobigurk/pairing-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e41b772c88dcb0ba7ac51c1b563a8549425375b134b2617c1662682a0e7a9d77
[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" "e41b772c88dcb0ba7ac51c1b563a8549425375b134b2617c1662682a0e7a9d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e41b772c88dcb0ba7ac51c1b563a8549425375b134b2617c1662682a0e7a9d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e41b772c88dcb0ba7ac51c1b563a8549425375b134b2617c1662682a0e7a9d77", kill_on_drop: false }`
[INFO] [stdout] e41b772c88dcb0ba7ac51c1b563a8549425375b134b2617c1662682a0e7a9d77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae1713ef5983e3dfe17e2c4e6df274ad3059916312fb55361e864311bdab48f5
[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" "ae1713ef5983e3dfe17e2c4e6df274ad3059916312fb55361e864311bdab48f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.52
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking ark-std v0.1.0 (https://github.com/arkworks-rs/utils#f6974ac7)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling semver-parser v0.10.1
[INFO] [stderr]     Checking ark-serialize v0.1.0 (https://github.com/arkworks-rs/algebra#9bc54172)
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling ark-ff v0.1.0 (https://github.com/arkworks-rs/algebra#9bc54172)
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling ark-ff-asm v0.1.0 (https://github.com/arkworks-rs/algebra#9bc54172)
[INFO] [stderr]     Checking ark-ec v0.1.0 (https://github.com/arkworks-rs/algebra#9bc54172)
[INFO] [stderr]     Checking ark-bls12-381 v0.1.0 (https://github.com/arkworks-rs/curves#23e87bf2)
[INFO] [stderr]     Checking pairing_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.36s
[INFO] running `Command { std: "docker" "inspect" "ae1713ef5983e3dfe17e2c4e6df274ad3059916312fb55361e864311bdab48f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1713ef5983e3dfe17e2c4e6df274ad3059916312fb55361e864311bdab48f5", kill_on_drop: false }`
[INFO] [stdout] ae1713ef5983e3dfe17e2c4e6df274ad3059916312fb55361e864311bdab48f5