[INFO] fetching crate rsflex 0.3.0...
[INFO] checking rsflex-0.3.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate rsflex 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rsflex 0.3.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rsflex 0.3.0
[INFO] finished tweaking crates.io crate rsflex 0.3.0
[INFO] tweaked toml for crates.io crate rsflex 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate rsflex 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] 08403e5dcfea1341915f6619a61ee1ae54b341a09f2b963724b8f3da18929815
[INFO] running `Command { std: "docker" "start" "-a" "08403e5dcfea1341915f6619a61ee1ae54b341a09f2b963724b8f3da18929815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08403e5dcfea1341915f6619a61ee1ae54b341a09f2b963724b8f3da18929815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08403e5dcfea1341915f6619a61ee1ae54b341a09f2b963724b8f3da18929815", kill_on_drop: false }`
[INFO] [stdout] 08403e5dcfea1341915f6619a61ee1ae54b341a09f2b963724b8f3da18929815
[INFO] running `Command { std: "docker" "create" "-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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] df9948be4b9e0660744a564cfafc3f30393f902155416ffd469529cda837d374
[INFO] running `Command { std: "docker" "start" "-a" "df9948be4b9e0660744a564cfafc3f30393f902155416ffd469529cda837d374", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling cmd_lib_core v0.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling cmd_lib_macros v0.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.20
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking cmd_lib v0.8.5
[INFO] [stderr]     Checking mimalloc v0.1.24
[INFO] [stderr]     Checking rsflex v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.29s
[INFO] running `Command { std: "docker" "inspect" "df9948be4b9e0660744a564cfafc3f30393f902155416ffd469529cda837d374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df9948be4b9e0660744a564cfafc3f30393f902155416ffd469529cda837d374", kill_on_drop: false }`
[INFO] [stdout] df9948be4b9e0660744a564cfafc3f30393f902155416ffd469529cda837d374