[INFO] updating cached repository https://github.com/Lapz/lox
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab169a8937bcb2afaa414e492495dc0880999425
[INFO] testing Lapz/lox against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLapz%2Flox" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lapz/lox on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lapz/lox
[INFO] finished tweaking git repo https://github.com/Lapz/lox
[INFO] tweaked toml for git repo https://github.com/Lapz/lox written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Lapz/lox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 297dc91ce9d06a8cac0d509413fa443de4f89c4c67ce25ae7800b4cbdd4a24ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "297dc91ce9d06a8cac0d509413fa443de4f89c4c67ce25ae7800b4cbdd4a24ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "297dc91ce9d06a8cac0d509413fa443de4f89c4c67ce25ae7800b4cbdd4a24ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "297dc91ce9d06a8cac0d509413fa443de4f89c4c67ce25ae7800b4cbdd4a24ba", kill_on_drop: false }`
[INFO] [stdout] 297dc91ce9d06a8cac0d509413fa443de4f89c4c67ce25ae7800b4cbdd4a24ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 63c379e63d9d19b66a79c6a85f35265c715c18429bb7469677d352e353da937d
[INFO] running `Command { std: "docker" "start" "-a" "63c379e63d9d19b66a79c6a85f35265c715c18429bb7469677d352e353da937d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:22:36
[INFO] [stdout]    |
[INFO] [stdout] 22 |     prefix: HashMap<RuleToken, &'a PrefixParser>,
[INFO] [stdout]    |                                    ^^^^^^^^^^^^ help: use `dyn`: `dyn PrefixParser`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:23:35
[INFO] [stdout]    |
[INFO] [stdout] 23 |     infix: HashMap<RuleToken, &'a InfixParser>,
[INFO] [stdout]    |                                   ^^^^^^^^^^^ help: use `dyn`: `dyn InfixParser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `compiler::IndexParselet: compiler::InfixParser` is not satisfied
[INFO] [stdout]   --> src/compiler.rs:96:44
[INFO] [stdout]    |
[INFO] [stdout] 96 |         compiler.infix(RuleToken::LBracket,&IndexParselet(Precedence::Call));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `compiler::InfixParser` is not implemented for `compiler::IndexParselet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "63c379e63d9d19b66a79c6a85f35265c715c18429bb7469677d352e353da937d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c379e63d9d19b66a79c6a85f35265c715c18429bb7469677d352e353da937d", kill_on_drop: false }`
[INFO] [stdout] 63c379e63d9d19b66a79c6a85f35265c715c18429bb7469677d352e353da937d