[INFO] cloning repository https://github.com/ben-jl/rusty-lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ben-jl/rusty-lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben-jl%2Frusty-lox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben-jl%2Frusty-lox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa1443fa9828c9d31421521bbd3a208ae0eea75d
[INFO] checking ben-jl/rusty-lox against master#bdcb6a99e853732f8ec050ae4986aa3af51d44c5 for 92191_revert
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben-jl%2Frusty-lox" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ben-jl/rusty-lox on toolchain bdcb6a99e853732f8ec050ae4986aa3af51d44c5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bdcb6a99e853732f8ec050ae4986aa3af51d44c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ben-jl/rusty-lox
[INFO] finished tweaking git repo https://github.com/ben-jl/rusty-lox
[INFO] tweaked toml for git repo https://github.com/ben-jl/rusty-lox written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/ben-jl/rusty-lox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bdcb6a99e853732f8ec050ae4986aa3af51d44c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+bdcb6a99e853732f8ec050ae4986aa3af51d44c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58fb644028d2871482dc4169250c5ed111b02ef7054f7e801943e462f3e19856
[INFO] running `Command { std: "docker" "start" "-a" "58fb644028d2871482dc4169250c5ed111b02ef7054f7e801943e462f3e19856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58fb644028d2871482dc4169250c5ed111b02ef7054f7e801943e462f3e19856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58fb644028d2871482dc4169250c5ed111b02ef7054f7e801943e462f3e19856", kill_on_drop: false }`
[INFO] [stdout] 58fb644028d2871482dc4169250c5ed111b02ef7054f7e801943e462f3e19856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+bdcb6a99e853732f8ec050ae4986aa3af51d44c5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e70e10abc409f9805c8f907462475f326c06d0c39a9a10b484a24a8cdd17794f
[INFO] running `Command { std: "docker" "start" "-a" "e70e10abc409f9805c8f907462475f326c06d0c39a9a10b484a24a8cdd17794f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rlox-contract v0.1.0 (/opt/rustwide/workdir/rlox-contract)
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking rlox-scanner v0.1.0 (/opt/rustwide/workdir/rlox-scanner)
[INFO] [stderr]     Checking rlox-parser v0.1.0 (/opt/rustwide/workdir/rlox-parser)
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> rlox-parser/src/lib.rs:669:13
[INFO] [stdout]     |
[INFO] [stdout] 669 |         let r = print(&res[0]);
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rlox-interpreter v0.1.0 (/opt/rustwide/workdir/rlox-interpreter)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simplelog v0.10.0
[INFO] [stderr]     Checking rlox-cli v0.1.0 (/opt/rustwide/workdir/rlox-cli)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
[INFO] running `Command { std: "docker" "inspect" "e70e10abc409f9805c8f907462475f326c06d0c39a9a10b484a24a8cdd17794f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e70e10abc409f9805c8f907462475f326c06d0c39a9a10b484a24a8cdd17794f", kill_on_drop: false }`
[INFO] [stdout] e70e10abc409f9805c8f907462475f326c06d0c39a9a10b484a24a8cdd17794f