[INFO] cloning repository https://github.com/tjk113/set_builder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tjk113/set_builder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjk113%2Fset_builder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjk113%2Fset_builder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a074801ba0f0aeef38317bf7011ab7814253eb90
[INFO] checking tjk113/set_builder against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjk113%2Fset_builder" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tjk113/set_builder on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tjk113/set_builder
[INFO] finished tweaking git repo https://github.com/tjk113/set_builder
[INFO] tweaked toml for git repo https://github.com/tjk113/set_builder written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tjk113/set_builder 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking tjk113/set_builder against try#7622c0f807a4e13c4db886a1681bf343795692df+rustflags=-Dnon_local_definitions for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftjk113%2Fset_builder" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tjk113/set_builder on toolchain 7622c0f807a4e13c4db886a1681bf343795692df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tjk113/set_builder
[INFO] finished tweaking git repo https://github.com/tjk113/set_builder
[INFO] tweaked toml for git repo https://github.com/tjk113/set_builder written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tjk113/set_builder 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" "+7622c0f807a4e13c4db886a1681bf343795692df" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27c8e1705ac7793981005cc460319aa148b132b29c2712518e37993170845649
[INFO] running `Command { std: "docker" "start" "-a" "27c8e1705ac7793981005cc460319aa148b132b29c2712518e37993170845649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27c8e1705ac7793981005cc460319aa148b132b29c2712518e37993170845649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c8e1705ac7793981005cc460319aa148b132b29c2712518e37993170845649", kill_on_drop: false }`
[INFO] [stdout] 27c8e1705ac7793981005cc460319aa148b132b29c2712518e37993170845649
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dnon_local_definitions" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c37d110c12ce19a021d42a5cee585fa261c4f8f853d79661e648ac82dd4c8235
[INFO] running `Command { std: "docker" "start" "-a" "c37d110c12ce19a021d42a5cee585fa261c4f8f853d79661e648ac82dd4c8235", kill_on_drop: false }`
[INFO] [stderr]     Checking set_builder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `output` and `ast` are never read
[INFO] [stdout]   --> src/codegenerator.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct X86_64Generator {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 14 |     output: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     ast: SetBuilder,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `output` and `ast` are never read
[INFO] [stdout]   --> src/codegenerator.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct X86_64Generator {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 14 |     output: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     ast: SetBuilder,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_ahead` is never used
[INFO] [stdout]   --> src/parser.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Parser {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn peek_ahead(&self, offset: usize) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_ahead` is never used
[INFO] [stdout]   --> src/parser.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Parser {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn peek_ahead(&self, offset: usize) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "c37d110c12ce19a021d42a5cee585fa261c4f8f853d79661e648ac82dd4c8235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c37d110c12ce19a021d42a5cee585fa261c4f8f853d79661e648ac82dd4c8235", kill_on_drop: false }`
[INFO] [stdout] c37d110c12ce19a021d42a5cee585fa261c4f8f853d79661e648ac82dd4c8235