[INFO] fetching crate libffi 0.9.0...
[INFO] checking libffi-0.9.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate libffi 0.9.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libffi 0.9.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libffi 0.9.0
[INFO] finished tweaking crates.io crate libffi 0.9.0
[INFO] tweaked toml for crates.io crate libffi 0.9.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate libffi 0.9.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v3.0.0
[INFO] [stderr]   Downloaded clang-sys v0.28.0
[INFO] [stderr]   Downloaded unicode-width v0.1.4
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded abort_on_panic v2.0.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded libffi-sys v0.9.0
[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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ecb4c099c8fe47894d550006b6d916870ef869b9dd7c55d880416f944095720
[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" "6ecb4c099c8fe47894d550006b6d916870ef869b9dd7c55d880416f944095720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ecb4c099c8fe47894d550006b6d916870ef869b9dd7c55d880416f944095720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ecb4c099c8fe47894d550006b6d916870ef869b9dd7c55d880416f944095720", kill_on_drop: false }`
[INFO] [stdout] 6ecb4c099c8fe47894d550006b6d916870ef869b9dd7c55d880416f944095720
[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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] e985f77d2761f9b2958bd32f763b0b87d63f388b47dd6db3b4280d3c426facc5
[INFO] running `Command { std: "docker" "start" "-a" "e985f77d2761f9b2958bd32f763b0b87d63f388b47dd6db3b4280d3c426facc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling make-cmd v0.1.0
[INFO] [stderr]     Checking abort_on_panic v2.0.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.6
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling clang-sys v0.28.0
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling which v3.0.0
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling cexpr v0.3.5
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]    Compiling libffi-sys v0.9.0
[INFO] [stderr]     Checking libffi v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 50s
[INFO] running `Command { std: "docker" "inspect" "e985f77d2761f9b2958bd32f763b0b87d63f388b47dd6db3b4280d3c426facc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e985f77d2761f9b2958bd32f763b0b87d63f388b47dd6db3b4280d3c426facc5", kill_on_drop: false }`
[INFO] [stdout] e985f77d2761f9b2958bd32f763b0b87d63f388b47dd6db3b4280d3c426facc5