[INFO] fetching crate libflo_std 0.1.0...
[INFO] testing libflo_std-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate libflo_std 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate libflo_std 0.1.0 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 crates.io crate libflo_std 0.1.0
[INFO] removed path dependency libflo from crates.io crate libflo_std 0.1.0
[INFO] removed path dependency libflo_error from crates.io crate libflo_std 0.1.0
[INFO] removed path dependency libflo_event from crates.io crate libflo_std 0.1.0
[INFO] removed path dependency libflo_func from crates.io crate libflo_std 0.1.0
[INFO] removed path dependency libflo_module from crates.io crate libflo_std 0.1.0
[INFO] removed path dependency libflo_type from crates.io crate libflo_std 0.1.0
[INFO] finished tweaking crates.io crate libflo_std 0.1.0
[INFO] tweaked toml for crates.io crate libflo_std 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libflo_type v0.1.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d578d7d33e0d71051ae9a745fe2138d6d96f5c53eeafdad404a8fbef1ea29c1c
[INFO] running `"docker" "start" "-a" "d578d7d33e0d71051ae9a745fe2138d6d96f5c53eeafdad404a8fbef1ea29c1c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling sharedlib v6.0.0
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling syntex_pos v0.54.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling libflo_error v0.1.2
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling syntex_errors v0.54.0
[INFO] [stderr]    Compiling syntex_syntax v0.54.0
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr] error[E0423]: expected function, tuple struct or tuple variant, found struct `ast::Name`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.54.0/src/symbol.rs:146:27
[INFO] [stderr]     |
[INFO] [stderr] 146 |                       name: ast::Name($index),
[INFO] [stderr]     |                             ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 165 | / declare_keywords! {
[INFO] [stderr] 166 | |     // Invalid identifier
[INFO] [stderr] 167 | |     (0,  Invalid,        "")
[INFO] [stderr] 168 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 231 | |     (56, CrateRoot, "{{root}}")
[INFO] [stderr] 232 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0423`.
[INFO] [stderr] error: could not compile `syntex_syntax`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d578d7d33e0d71051ae9a745fe2138d6d96f5c53eeafdad404a8fbef1ea29c1c"`
[INFO] running `"docker" "rm" "-f" "d578d7d33e0d71051ae9a745fe2138d6d96f5c53eeafdad404a8fbef1ea29c1c"`
[INFO] [stdout] d578d7d33e0d71051ae9a745fe2138d6d96f5c53eeafdad404a8fbef1ea29c1c