[INFO] cloning repository https://github.com/shafu0x/huff-stack-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shafu0x/huff-stack-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshafu0x%2Fhuff-stack-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshafu0x%2Fhuff-stack-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73934e030e340a1ddcf48b08e629a15b64bfe85d
[INFO] checking shafu0x/huff-stack-generator against try#c4ca24658d934444a28db36abebef17a8651701a for pr-144156
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshafu0x%2Fhuff-stack-generator" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shafu0x/huff-stack-generator
[INFO] finished tweaking git repo https://github.com/shafu0x/huff-stack-generator
[INFO] tweaked toml for git repo https://github.com/shafu0x/huff-stack-generator written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shafu0x/huff-stack-generator on toolchain c4ca24658d934444a28db36abebef17a8651701a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shafu0x/huff-stack-generator 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" "+c4ca24658d934444a28db36abebef17a8651701a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a7ec556fb73344197caa5c9f6bcba47083db5b7ba791ddfd5fe69d936fb3a32
[INFO] running `Command { std: "docker" "start" "-a" "7a7ec556fb73344197caa5c9f6bcba47083db5b7ba791ddfd5fe69d936fb3a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a7ec556fb73344197caa5c9f6bcba47083db5b7ba791ddfd5fe69d936fb3a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a7ec556fb73344197caa5c9f6bcba47083db5b7ba791ddfd5fe69d936fb3a32", kill_on_drop: false }`
[INFO] [stdout] 7a7ec556fb73344197caa5c9f6bcba47083db5b7ba791ddfd5fe69d936fb3a32
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12687ef2024778b05ba49e3fea6ba8b932d9364cee3d38348800493c91679d68
[INFO] running `Command { std: "docker" "start" "-a" "12687ef2024778b05ba49e3fea6ba8b932d9364cee3d38348800493c91679d68", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking aho-corasick v1.0.5
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking huff-stack-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> src/jump.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(name: String, start: usize) -> JumpLabel {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> src/jump.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(name: String, start: usize) -> JumpLabel {
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start` is never read
[INFO] [stdout]  --> src/jump.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct JumpLabel {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     pub name: String,
[INFO] [stdout] 6 |     pub start: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `JumpLabel` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/jump.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl JumpLabelsMap {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get(&self, name: &str) -> Option<&JumpLabel> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek` is never used
[INFO] [stdout]   --> src/stack.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Stack {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn peek(&self) -> Option<&Token> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start` is never read
[INFO] [stdout]  --> src/jump.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct JumpLabel {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     pub name: String,
[INFO] [stdout] 6 |     pub start: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `JumpLabel` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/jump.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl JumpLabelsMap {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get(&self, name: &str) -> Option<&JumpLabel> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek` is never used
[INFO] [stdout]   --> src/stack.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Stack {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn peek(&self) -> Option<&Token> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.53s
[INFO] running `Command { std: "docker" "inspect" "12687ef2024778b05ba49e3fea6ba8b932d9364cee3d38348800493c91679d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12687ef2024778b05ba49e3fea6ba8b932d9364cee3d38348800493c91679d68", kill_on_drop: false }`
[INFO] [stdout] 12687ef2024778b05ba49e3fea6ba8b932d9364cee3d38348800493c91679d68