[INFO] cloning repository https://github.com/DavidGoldman/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DavidGoldman/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDavidGoldman%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDavidGoldman%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 632a0638b7a6c3af505ff90f1c8a7b7200d1b97a
[INFO] checking DavidGoldman/rlox against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDavidGoldman%2Frlox" "/workspace/builds/worker-68/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-68/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DavidGoldman/rlox on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DavidGoldman/rlox
[INFO] finished tweaking git repo https://github.com/DavidGoldman/rlox
[INFO] tweaked toml for git repo https://github.com/DavidGoldman/rlox written to /workspace/builds/worker-68/source/Cargo.toml
[INFO] crate git repo https://github.com/DavidGoldman/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "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-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0cfb03820784f04f58627a6e3afa5d534e9963b74e565d74b288a7721fe2083
[INFO] running `Command { std: "docker" "start" "-a" "f0cfb03820784f04f58627a6e3afa5d534e9963b74e565d74b288a7721fe2083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0cfb03820784f04f58627a6e3afa5d534e9963b74e565d74b288a7721fe2083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0cfb03820784f04f58627a6e3afa5d534e9963b74e565d74b288a7721fe2083", kill_on_drop: false }`
[INFO] [stdout] f0cfb03820784f04f58627a6e3afa5d534e9963b74e565d74b288a7721fe2083
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5186889cd7e657dd7983155cf1c02790584ce8148bf2a06a0cf9f4768c9a3ba5
[INFO] running `Command { std: "docker" "start" "-a" "5186889cd7e657dd7983155cf1c02790584ce8148bf2a06a0cf9f4768c9a3ba5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking string-interner v0.12.2
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]   --> src/vm/value.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     String(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]   --> src/vm/value.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     String(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.94s
[INFO] running `Command { std: "docker" "inspect" "5186889cd7e657dd7983155cf1c02790584ce8148bf2a06a0cf9f4768c9a3ba5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5186889cd7e657dd7983155cf1c02790584ce8148bf2a06a0cf9f4768c9a3ba5", kill_on_drop: false }`
[INFO] [stdout] 5186889cd7e657dd7983155cf1c02790584ce8148bf2a06a0cf9f4768c9a3ba5