[INFO] cloning repository https://github.com/JayrellGaming/sylphverifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JayrellGaming/sylphverifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayrellGaming%2Fsylphverifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayrellGaming%2Fsylphverifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0f717befce91863a6112999de4df2c7d0167edd
[INFO] checking JayrellGaming/sylphverifier against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayrellGaming%2Fsylphverifier" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JayrellGaming/sylphverifier on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JayrellGaming/sylphverifier
[INFO] finished tweaking git repo https://github.com/JayrellGaming/sylphverifier
[INFO] tweaked toml for git repo https://github.com/JayrellGaming/sylphverifier written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/JayrellGaming/sylphverifier already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/withoutboats/failure.git`
[INFO] [stderr]     Updating git repository `https://github.com/withoutboats/display_derive`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded digest v0.7.2
[INFO] [stderr]   Downloaded arrayref v0.3.4
[INFO] [stderr]   Downloaded mime_guess v1.8.4
[INFO] [stderr]   Downloaded lz4-sys v1.8.0
[INFO] [stderr]   Downloaded scheduled-thread-pool v0.2.0
[INFO] [stderr]   Downloaded rand_core v0.2.0
[INFO] [stderr]   Downloaded rusqlite v0.13.0
[INFO] [stderr]   Downloaded synstructure v0.6.1
[INFO] [stderr]   Downloaded fs2 v0.4.3
[INFO] [stderr]   Downloaded hmac v0.6.2
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] [stderr]   Downloaded rand v0.5.0
[INFO] [stderr]   Downloaded nix v0.7.0
[INFO] [stderr]   Downloaded r2d2 v0.8.2
[INFO] [stderr]   Downloaded rustc_version v0.2.2
[INFO] [stderr]   Downloaded git2 v0.7.1
[INFO] [stderr]   Downloaded libsqlite3-sys v0.9.1
[INFO] [stderr]   Downloaded serde_derive v1.0.61
[INFO] [stderr]   Downloaded petgraph v0.4.12
[INFO] [stderr]   Downloaded enumset v0.3.10
[INFO] [stderr]   Downloaded serde v1.0.61
[INFO] [stderr]   Downloaded libssh2-sys v0.2.7
[INFO] [stderr]   Downloaded libz-sys v1.0.18
[INFO] [stderr]   Downloaded serenity v0.5.3
[INFO] [stderr]   Downloaded curl-sys v0.4.5
[INFO] [stderr]   Downloaded libgit2-sys v0.7.1
[INFO] [stderr]   Downloaded crypto-mac v0.6.0
[INFO] [stderr]   Downloaded cmake v0.1.31
[INFO] [stderr]   Downloaded terminfo v0.5.0
[INFO] [stderr]   Downloaded linefeed v0.5.0
[INFO] [stderr]   Downloaded mortal v0.1.2
[INFO] [stderr]   Downloaded backtrace-sys v0.1.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61ee75536b7b0002f787840c122888e06fbace9be44044317d900aa5195ef91c
[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" "61ee75536b7b0002f787840c122888e06fbace9be44044317d900aa5195ef91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61ee75536b7b0002f787840c122888e06fbace9be44044317d900aa5195ef91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61ee75536b7b0002f787840c122888e06fbace9be44044317d900aa5195ef91c", kill_on_drop: false }`
[INFO] [stdout] 61ee75536b7b0002f787840c122888e06fbace9be44044317d900aa5195ef91c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 416f9c27791f754881922dc1858c3cc1268b996cdd7ad426df5cb194881433a7
[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" "416f9c27791f754881922dc1858c3cc1268b996cdd7ad426df5cb194881433a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling serde v1.0.61
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking linked-hash-map v0.4.2
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking rand_core v0.2.0
[INFO] [stderr]     Checking enumset v0.3.10
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking encoding_rs v0.7.2
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stdout] error: `allow_internal_unstable` expects a list of feature names
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enumset-0.3.10/src/lib.rs:600:1
[INFO] [stdout]     |
[INFO] [stdout] 600 | #[allow_internal_unstable]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enumset`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "416f9c27791f754881922dc1858c3cc1268b996cdd7ad426df5cb194881433a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "416f9c27791f754881922dc1858c3cc1268b996cdd7ad426df5cb194881433a7", kill_on_drop: false }`
[INFO] [stdout] 416f9c27791f754881922dc1858c3cc1268b996cdd7ad426df5cb194881433a7