[INFO] updating cached repository https://github.com/sgr2848/nolang
[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] 600cd5f3435bb23840c843c369a5e705809b2c78
[INFO] testing sgr2848/nolang against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgr2848%2Fnolang" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgr2848/nolang 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/sgr2848/nolang
[INFO] finished tweaking git repo https://github.com/sgr2848/nolang
[INFO] tweaked toml for git repo https://github.com/sgr2848/nolang written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/sgr2848/nolang 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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 575c86703645c2e10ae31c61626ee894a30dc1fd1889bba68e66cbf874ef016a
[INFO] running `"docker" "start" "-a" "575c86703645c2e10ae31c61626ee894a30dc1fd1889bba68e66cbf874ef016a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling nano_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `backtrace`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use backtrace::Backtrace;
[INFO] [stderr]   |     ^^^^^^^^^ help: a similar path exists: `std::backtrace`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `return` value
[INFO] [stderr]    --> src/interpreter.rs:241:20
[INFO] [stderr]     |
[INFO] [stderr] 241 |             return (left);
[INFO] [stderr]     |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Lexer`, `NodeId`, `ParseTreeNode`, `Type`, `build_pt`
[INFO] [stderr]   --> src/mapper.rs:5:9
[INFO] [stderr]    |
[INFO] [stderr] 5  |         build_pt
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 8  |         Type,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 9  |         Lexer},
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr] 10 |     node::{
[INFO] [stderr] 11 |         NodeId,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 12 |         ParseTreeNode,
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PTVec`
[INFO] [stderr]  --> src/node.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     PTVec,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/main.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `nano_lang`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "575c86703645c2e10ae31c61626ee894a30dc1fd1889bba68e66cbf874ef016a"`
[INFO] running `"docker" "rm" "-f" "575c86703645c2e10ae31c61626ee894a30dc1fd1889bba68e66cbf874ef016a"`
[INFO] [stdout] 575c86703645c2e10ae31c61626ee894a30dc1fd1889bba68e66cbf874ef016a