[INFO] cloning repository https://github.com/sgr2848/nolang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sgr2848/nolang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgr2848%2Fnolang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgr2848%2Fnolang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 600cd5f3435bb23840c843c369a5e705809b2c78
[INFO] testing sgr2848/nolang against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgr2848%2Fnolang" "/workspace/builds/worker-108/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-108/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgr2848/nolang on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-108/source/Cargo.toml
[INFO] crate git repo https://github.com/sgr2848/nolang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a82270ad6027f93a239d01199dd501a02024ec0be39888690ee1479aa9cd8c8b
[INFO] running `Command { std: "docker" "start" "-a" "a82270ad6027f93a239d01199dd501a02024ec0be39888690ee1479aa9cd8c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a82270ad6027f93a239d01199dd501a02024ec0be39888690ee1479aa9cd8c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a82270ad6027f93a239d01199dd501a02024ec0be39888690ee1479aa9cd8c8b", kill_on_drop: false }`
[INFO] [stdout] a82270ad6027f93a239d01199dd501a02024ec0be39888690ee1479aa9cd8c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eebbf979f4b1f1072518d0440774406a8fb30339f1b604bf3495b66024f25782
[INFO] running `Command { std: "docker" "start" "-a" "eebbf979f4b1f1072518d0440774406a8fb30339f1b604bf3495b66024f25782", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling nano_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `backtrace`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use backtrace::Backtrace;
[INFO] [stdout]   |     ^^^^^^^^^ help: a similar path exists: `std::backtrace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]    --> src/interpreter.rs:241:20
[INFO] [stdout]     |
[INFO] [stdout] 241 |             return (left);
[INFO] [stdout]     |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Lexer`, `NodeId`, `ParseTreeNode`, `Type`, `build_pt`
[INFO] [stdout]   --> src/mapper.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  |         build_pt
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 8  |         Type,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 9  |         Lexer},
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 10 |     node::{
[INFO] [stdout] 11 |         NodeId,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 12 |         ParseTreeNode,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PTVec`
[INFO] [stdout]  --> src/node.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     PTVec,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/main.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nano_lang`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "eebbf979f4b1f1072518d0440774406a8fb30339f1b604bf3495b66024f25782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eebbf979f4b1f1072518d0440774406a8fb30339f1b604bf3495b66024f25782", kill_on_drop: false }`
[INFO] [stdout] eebbf979f4b1f1072518d0440774406a8fb30339f1b604bf3495b66024f25782
