[INFO] cloning repository https://github.com/urbanslug/pdf-analyzer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/urbanslug/pdf-analyzer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbanslug%2Fpdf-analyzer"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbanslug%2Fpdf-analyzer'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2c222e7f50b79e84a3f396f7875d5ac0ec8940af
[INFO] testing urbanslug/pdf-analyzer against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbanslug%2Fpdf-analyzer" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/urbanslug/pdf-analyzer on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/urbanslug/pdf-analyzer
[INFO] finished tweaking git repo https://github.com/urbanslug/pdf-analyzer
[INFO] tweaked toml for git repo https://github.com/urbanslug/pdf-analyzer written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/urbanslug/pdf-analyzer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pdf_derive v0.1.17
[INFO] [stderr]   Downloaded pdf v0.6.3
[INFO] [stderr]   Downloaded pdf-extract v0.6.1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 14978f01679d8f869c5c78e651209bbfa5214cb68a9b2e7f18f5b5b63df0d6cd
[INFO] running `"docker" "start" "-a" "14978f01679d8f869c5c78e651209bbfa5214cb68a9b2e7f18f5b5b63df0d6cd"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling pom v1.1.0
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling pom v3.0.2
[INFO] [stderr]    Compiling postscript v0.11.1
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling ordermap v0.2.13
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling miniz_oxide v0.3.5
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling type1-encoding-parser v0.1.0
[INFO] [stderr]    Compiling adobe-cmap-parser v0.3.3
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]    Compiling memmap v0.5.2
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling pdf_derive v0.1.17
[INFO] [stderr]    Compiling unicode-normalization v0.1.9
[INFO] [stderr]    Compiling flate2 v1.0.13
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling lopdf v0.23.0
[INFO] [stderr]    Compiling tuple v0.4.2
[INFO] [stderr]    Compiling euclid v0.15.6
[INFO] [stderr]    Compiling pdf-extract v0.6.1
[INFO] [stderr]    Compiling pdf v0.6.3
[INFO] [stderr]    Compiling analyzer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(pattern)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `analyzer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "14978f01679d8f869c5c78e651209bbfa5214cb68a9b2e7f18f5b5b63df0d6cd"`
[INFO] running `"docker" "rm" "-f" "14978f01679d8f869c5c78e651209bbfa5214cb68a9b2e7f18f5b5b63df0d6cd"`
[INFO] [stdout] 14978f01679d8f869c5c78e651209bbfa5214cb68a9b2e7f18f5b5b63df0d6cd