[INFO] cloning repository https://github.com/doste/rusty-chibicc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/doste/rusty-chibicc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoste%2Frusty-chibicc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoste%2Frusty-chibicc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcca71a6ff045811439a4b8e1176752d258770a9
[INFO] checking doste/rusty-chibicc against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoste%2Frusty-chibicc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/doste/rusty-chibicc on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/doste/rusty-chibicc
[INFO] finished tweaking git repo https://github.com/doste/rusty-chibicc
[INFO] tweaked toml for git repo https://github.com/doste/rusty-chibicc written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/doste/rusty-chibicc 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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] checking doste/rusty-chibicc against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoste%2Frusty-chibicc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/doste/rusty-chibicc on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/doste/rusty-chibicc
[INFO] finished tweaking git repo https://github.com/doste/rusty-chibicc
[INFO] tweaked toml for git repo https://github.com/doste/rusty-chibicc written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/doste/rusty-chibicc 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 838fb2280f69161c7d47b552ea73a8ed7fd56ec8fc950c5ddd4fb078a8894fba
[INFO] running `Command { std: "docker" "start" "-a" "838fb2280f69161c7d47b552ea73a8ed7fd56ec8fc950c5ddd4fb078a8894fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "838fb2280f69161c7d47b552ea73a8ed7fd56ec8fc950c5ddd4fb078a8894fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "838fb2280f69161c7d47b552ea73a8ed7fd56ec8fc950c5ddd4fb078a8894fba", kill_on_drop: false }`
[INFO] [stdout] 838fb2280f69161c7d47b552ea73a8ed7fd56ec8fc950c5ddd4fb078a8894fba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a775759840ee0598e6bac1a629c43800eedf1035befd4f6e3f71652e124ca89e
[INFO] running `Command { std: "docker" "start" "-a" "a775759840ee0598e6bac1a629c43800eedf1035befd4f6e3f71652e124ca89e", kill_on_drop: false }`
[INFO] [stderr]     Checking rusty-chibicc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/code_gen.rs:108:69
[INFO] [stdout]     |
[INFO] [stdout] 108 |             NodeKind::NDEq => {                                     /// 1 = true . 0 = false
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 109 |                 self.gen_binary_op(node);
[INFO] [stdout]     |                 ------------------------ rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/code_gen.rs:108:69
[INFO] [stdout]     |
[INFO] [stdout] 108 |             NodeKind::NDEq => {                                     /// 1 = true . 0 = false
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 109 |                 self.gen_binary_op(node);
[INFO] [stdout]     |                 ------------------------ rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parser` is never read
[INFO] [stdout]   --> src/code_gen.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct CodeGenerator<'a> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 11 |     pub parser: &'a Parser<'a>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_number` is never used
[INFO] [stdout]   --> src/lexer.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<'b> Token<'b> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn get_number(&self) -> i64 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/parser.rs:262:12
[INFO] [stdout]     |
[INFO] [stdout] 261 | impl Node {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 262 |     pub fn new(kind: NodeKind) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/lexer.rs:84:54
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut program_copy_to_modify = self.program.clone();
[INFO] [stdout]    |                                                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parser` is never read
[INFO] [stdout]   --> src/code_gen.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct CodeGenerator<'a> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 11 |     pub parser: &'a Parser<'a>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_number` is never used
[INFO] [stdout]   --> src/lexer.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<'b> Token<'b> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn get_number(&self) -> i64 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/parser.rs:262:12
[INFO] [stdout]     |
[INFO] [stdout] 261 | impl Node {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 262 |     pub fn new(kind: NodeKind) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/lexer.rs:84:54
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let mut program_copy_to_modify = self.program.clone();
[INFO] [stdout]    |                                                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "a775759840ee0598e6bac1a629c43800eedf1035befd4f6e3f71652e124ca89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a775759840ee0598e6bac1a629c43800eedf1035befd4f6e3f71652e124ca89e", kill_on_drop: false }`
[INFO] [stdout] a775759840ee0598e6bac1a629c43800eedf1035befd4f6e3f71652e124ca89e