[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] building ben-jl/rusty-lox against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben-jl%2Frusty-lox" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ben-jl/rusty-lox on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "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-2-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "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
[ERROR] error running command: no output for 300 seconds
[INFO] building ben-jl/rusty-lox against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben-jl%2Frusty-lox" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ben-jl/rusty-lox on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "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-2-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad86a4d54cb4615864011780b5ec35adab4e605bcb14f1346b5a8f3307dedfd9
[INFO] running `Command { std: "docker" "start" "-a" "ad86a4d54cb4615864011780b5ec35adab4e605bcb14f1346b5a8f3307dedfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad86a4d54cb4615864011780b5ec35adab4e605bcb14f1346b5a8f3307dedfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad86a4d54cb4615864011780b5ec35adab4e605bcb14f1346b5a8f3307dedfd9", kill_on_drop: false }`
[INFO] [stdout] ad86a4d54cb4615864011780b5ec35adab4e605bcb14f1346b5a8f3307dedfd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43abf4c6ba95b88473951ecb96731c218c6b49ffa84d019134a21df62cff4be2
[INFO] running `Command { std: "docker" "start" "-a" "43abf4c6ba95b88473951ecb96731c218c6b49ffa84d019134a21df62cff4be2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rlox-contract v0.1.0 (/opt/rustwide/workdir/rlox-contract)
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling rlox-scanner v0.1.0 (/opt/rustwide/workdir/rlox-scanner)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rlox-parser v0.1.0 (/opt/rustwide/workdir/rlox-parser)
[INFO] [stderr]    Compiling rlox-interpreter v0.1.0 (/opt/rustwide/workdir/rlox-interpreter)
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling simplelog v0.10.0
[INFO] [stderr]    Compiling rlox-cli v0.1.0 (/opt/rustwide/workdir/rlox-cli)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `Command { std: "docker" "inspect" "43abf4c6ba95b88473951ecb96731c218c6b49ffa84d019134a21df62cff4be2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43abf4c6ba95b88473951ecb96731c218c6b49ffa84d019134a21df62cff4be2", kill_on_drop: false }`
[INFO] [stdout] 43abf4c6ba95b88473951ecb96731c218c6b49ffa84d019134a21df62cff4be2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec46a169b5351158639bea4ac6eba467d51a48fc8808c96020a66105eb1f76d9
[INFO] running `Command { std: "docker" "start" "-a" "ec46a169b5351158639bea4ac6eba467d51a48fc8808c96020a66105eb1f76d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlox-cli v0.1.0 (/opt/rustwide/workdir/rlox-cli)
[INFO] [stderr]    Compiling rlox-interpreter v0.1.0 (/opt/rustwide/workdir/rlox-interpreter)
[INFO] [stderr]    Compiling rlox-scanner v0.1.0 (/opt/rustwide/workdir/rlox-scanner)
[INFO] [stderr]    Compiling rlox-parser v0.1.0 (/opt/rustwide/workdir/rlox-parser)
[INFO] [stderr]    Compiling rlox-contract v0.1.0 (/opt/rustwide/workdir/rlox-contract)
[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]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "ec46a169b5351158639bea4ac6eba467d51a48fc8808c96020a66105eb1f76d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec46a169b5351158639bea4ac6eba467d51a48fc8808c96020a66105eb1f76d9", kill_on_drop: false }`
[INFO] [stdout] ec46a169b5351158639bea4ac6eba467d51a48fc8808c96020a66105eb1f76d9