[INFO] updating cached repository https://github.com/Techno-coder/lucent
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25f120821e32e4f7c0b3ab9b17f40fb91eb57375
[INFO] testing Techno-coder/lucent against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechno-coder%2Flucent" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Techno-coder/lucent on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Techno-coder/lucent
[INFO] finished tweaking git repo https://github.com/Techno-coder/lucent
[INFO] tweaked toml for git repo https://github.com/Techno-coder/lucent written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Techno-coder/lucent already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.44.0" "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] a151c0d6fd8c16ca903547a3086f32a90a75bdaef8bf1a8de28bcca5f4ff62c0
[INFO] running `"docker" "start" "-a" "a151c0d6fd8c16ca903547a3086f32a90a75bdaef8bf1a8de28bcca5f4ff62c0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling tree-sitter v0.16.0
[INFO] [stderr]    Compiling lucent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling codespan-reporting v0.9.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling codespan v0.9.4
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr] warning: In file included from tree-sitter-lucent/src/parser.c:1:
[INFO] [stderr] warning: tree-sitter-lucent/src/parser.c: In function 'ts_lex_keywords':
[INFO] [stderr] warning: tree-sitter-lucent/src/tree_sitter/parser.h:131:8: warning: variable 'eof' set but not used [-Wunused-but-set-variable]
[INFO] [stderr] warning:   131 |   bool eof = false;             \
[INFO] [stderr] warning:       |        ^~~
[INFO] [stderr] warning: tree-sitter-lucent/src/parser.c:2396:3: note: in expansion of macro 'START_LEXER'
[INFO] [stderr] warning:  2396 |   START_LEXER();
[INFO] [stderr] warning:       |   ^~~~~~~~~~~
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling ahash v0.3.5
[INFO] [stderr]    Compiling dashmap v3.11.2
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(option_unwrap_none)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(entry_insert)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(never_type)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: In file included from tree-sitter-lucent/src/parser.c:1:
[INFO] [stderr] warning: tree-sitter-lucent/src/parser.c: In function 'ts_lex_keywords':
[INFO] [stderr] warning: tree-sitter-lucent/src/tree_sitter/parser.h:131:8: warning: variable 'eof' set but not used [-Wunused-but-set-variable]
[INFO] [stderr] warning:   131 |   bool eof = false;             \
[INFO] [stderr] warning:       |        ^~~
[INFO] [stderr] warning: tree-sitter-lucent/src/parser.c:2396:3: note: in expansion of macro 'START_LEXER'
[INFO] [stderr] warning:  2396 |   START_LEXER();
[INFO] [stderr] warning:       |   ^~~~~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `lucent`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a151c0d6fd8c16ca903547a3086f32a90a75bdaef8bf1a8de28bcca5f4ff62c0"`
[INFO] running `"docker" "rm" "-f" "a151c0d6fd8c16ca903547a3086f32a90a75bdaef8bf1a8de28bcca5f4ff62c0"`
[INFO] [stdout] a151c0d6fd8c16ca903547a3086f32a90a75bdaef8bf1a8de28bcca5f4ff62c0