[INFO] fetching crate secp256k1 0.20.1...
[INFO] checking secp256k1-0.20.1 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate secp256k1 0.20.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate secp256k1 0.20.1 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 crates.io crate secp256k1 0.20.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate secp256k1 0.20.1
[INFO] tweaked toml for crates.io crate secp256k1 0.20.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate secp256k1 0.20.1 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] running `Command { std: "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" "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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] 06fbae3650e5dc10e4f38d42280fd96f754eed83181a2a2315dbbe3ed265d0f9
[INFO] running `Command { std: "docker" "start" "-a" "06fbae3650e5dc10e4f38d42280fd96f754eed83181a2a2315dbbe3ed265d0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06fbae3650e5dc10e4f38d42280fd96f754eed83181a2a2315dbbe3ed265d0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06fbae3650e5dc10e4f38d42280fd96f754eed83181a2a2315dbbe3ed265d0f9", kill_on_drop: false }`
[INFO] [stdout] 06fbae3650e5dc10e4f38d42280fd96f754eed83181a2a2315dbbe3ed265d0f9
[INFO] running `Command { std: "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" "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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9a41f134b77f6ac3b2c44a470b01f70a48f81d35ca814925d5bf77443f59a83
[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" "b9a41f134b77f6ac3b2c44a470b01f70a48f81d35ca814925d5bf77443f59a83", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking bitcoin_hashes v0.9.4
[INFO] [stderr]    Compiling secp256k1-sys v0.4.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking secp256k1 v0.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_test v1.0.118
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.37s
[INFO] running `Command { std: "docker" "inspect" "b9a41f134b77f6ac3b2c44a470b01f70a48f81d35ca814925d5bf77443f59a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9a41f134b77f6ac3b2c44a470b01f70a48f81d35ca814925d5bf77443f59a83", kill_on_drop: false }`
[INFO] [stdout] b9a41f134b77f6ac3b2c44a470b01f70a48f81d35ca814925d5bf77443f59a83