[INFO] cloning repository https://github.com/angelini/steel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/angelini/steel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelini%2Fsteel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelini%2Fsteel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e26b482a62fbc0d21e880e6c2815e8c1e40842f8
[INFO] checking angelini/steel against master#fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6 for pr-120361
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelini%2Fsteel" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/angelini/steel on toolchain fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/angelini/steel
[INFO] finished tweaking git repo https://github.com/angelini/steel
[INFO] tweaked toml for git repo https://github.com/angelini/steel written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/angelini/steel 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" "+fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6" "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 angelini/steel against try#e35e259478581c01033b8da67214c0d376859a32 for pr-120361
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelini%2Fsteel" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/angelini/steel on toolchain e35e259478581c01033b8da67214c0d376859a32
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e35e259478581c01033b8da67214c0d376859a32" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/angelini/steel
[INFO] finished tweaking git repo https://github.com/angelini/steel
[INFO] tweaked toml for git repo https://github.com/angelini/steel written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/angelini/steel 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" "+e35e259478581c01033b8da67214c0d376859a32" "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 angelini/steel against try#e35e259478581c01033b8da67214c0d376859a32 for pr-120361
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelini%2Fsteel" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/angelini/steel on toolchain e35e259478581c01033b8da67214c0d376859a32
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e35e259478581c01033b8da67214c0d376859a32" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/angelini/steel
[INFO] finished tweaking git repo https://github.com/angelini/steel
[INFO] tweaked toml for git repo https://github.com/angelini/steel written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/angelini/steel 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" "+e35e259478581c01033b8da67214c0d376859a32" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+e35e259478581c01033b8da67214c0d376859a32" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fb7ffe2780a9f4b1f574179b4ad9d7333719d8ae24cb1381326911e7dbbe4ee
[INFO] running `Command { std: "docker" "start" "-a" "5fb7ffe2780a9f4b1f574179b4ad9d7333719d8ae24cb1381326911e7dbbe4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fb7ffe2780a9f4b1f574179b4ad9d7333719d8ae24cb1381326911e7dbbe4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fb7ffe2780a9f4b1f574179b4ad9d7333719d8ae24cb1381326911e7dbbe4ee", kill_on_drop: false }`
[INFO] [stdout] 5fb7ffe2780a9f4b1f574179b4ad9d7333719d8ae24cb1381326911e7dbbe4ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+e35e259478581c01033b8da67214c0d376859a32" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed5d7c1358a99914250b67df8be7f3c3f2bae039c0385141bfc9b3d0915309c1
[INFO] running `Command { std: "docker" "start" "-a" "ed5d7c1358a99914250b67df8be7f3c3f2bae039c0385141bfc9b3d0915309c1", kill_on_drop: false }`
[INFO] [stderr]     Checking steel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/compiler.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |             _ => {
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]  --> src/native.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn execute_native(func: NativeFn, args: &[Value]) -> Value {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]  --> src/native.rs:9:39
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn execute_native(func: NativeFn, args: &[Value]) -> Value {
[INFO] [stdout]   |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chunk`
[INFO] [stdout]   --> src/vm.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn execute(&mut self, chunk: &Chunk) -> Result<(), VmError> {
[INFO] [stdout]    |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/compiler.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |             _ => {
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/ast.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Ast {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn iter(&self) -> Iter<Expression> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add` and `Print` are never constructed
[INFO] [stdout]  --> src/native.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum NativeFn {
[INFO] [stdout]   |          -------- variants in this enum
[INFO] [stdout] 5 |     Add,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     Print,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `NativeFn` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_native` is never used
[INFO] [stdout]  --> src/native.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn execute_native(func: NativeFn, args: &[Value]) -> Value {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `globals` is never read
[INFO] [stdout]  --> src/vm.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Vm {
[INFO] [stdout]   |            -- field in this struct
[INFO] [stdout] 9 |     globals: HashMap<String, Value>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]  --> src/native.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn execute_native(func: NativeFn, args: &[Value]) -> Value {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]  --> src/native.rs:9:39
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn execute_native(func: NativeFn, args: &[Value]) -> Value {
[INFO] [stdout]   |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chunk`
[INFO] [stdout]   --> src/vm.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn execute(&mut self, chunk: &Chunk) -> Result<(), VmError> {
[INFO] [stdout]    |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/ast.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Ast {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn iter(&self) -> Iter<Expression> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add` and `Print` are never constructed
[INFO] [stdout]  --> src/native.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum NativeFn {
[INFO] [stdout]   |          -------- variants in this enum
[INFO] [stdout] 5 |     Add,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     Print,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `NativeFn` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_native` is never used
[INFO] [stdout]  --> src/native.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn execute_native(func: NativeFn, args: &[Value]) -> Value {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `globals` is never read
[INFO] [stdout]  --> src/vm.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Vm {
[INFO] [stdout]   |            -- field in this struct
[INFO] [stdout] 9 |     globals: HashMap<String, Value>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "ed5d7c1358a99914250b67df8be7f3c3f2bae039c0385141bfc9b3d0915309c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed5d7c1358a99914250b67df8be7f3c3f2bae039c0385141bfc9b3d0915309c1", kill_on_drop: false }`
[INFO] [stdout] ed5d7c1358a99914250b67df8be7f3c3f2bae039c0385141bfc9b3d0915309c1