[INFO] cloning repository https://github.com/felixnaredi/prepro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/felixnaredi/prepro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixnaredi%2Fprepro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixnaredi%2Fprepro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e045d6fc8cd48426acf32764c146ddaf6a5f6d2f
[INFO] checking felixnaredi/prepro against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixnaredi%2Fprepro" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/felixnaredi/prepro on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/felixnaredi/prepro
[INFO] finished tweaking git repo https://github.com/felixnaredi/prepro
[INFO] tweaked toml for git repo https://github.com/felixnaredi/prepro written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/felixnaredi/prepro 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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "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 felixnaredi/prepro against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelixnaredi%2Fprepro" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/felixnaredi/prepro on toolchain 09bc67b9158392361780e779d32997f14cc75c39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/felixnaredi/prepro
[INFO] finished tweaking git repo https://github.com/felixnaredi/prepro
[INFO] tweaked toml for git repo https://github.com/felixnaredi/prepro written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/felixnaredi/prepro 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" "+09bc67b9158392361780e779d32997f14cc75c39" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b44417aca5a95122538c06265ffec1bf9fc7f2e9976a0514ecee775ee33e82e
[INFO] running `Command { std: "docker" "start" "-a" "2b44417aca5a95122538c06265ffec1bf9fc7f2e9976a0514ecee775ee33e82e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b44417aca5a95122538c06265ffec1bf9fc7f2e9976a0514ecee775ee33e82e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b44417aca5a95122538c06265ffec1bf9fc7f2e9976a0514ecee775ee33e82e", kill_on_drop: false }`
[INFO] [stdout] 2b44417aca5a95122538c06265ffec1bf9fc7f2e9976a0514ecee775ee33e82e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17cb4f62530709796043705ca24378acbef51a103ea54030373dd0ae51bcb4a1
[INFO] running `Command { std: "docker" "start" "-a" "17cb4f62530709796043705ca24378acbef51a103ea54030373dd0ae51bcb4a1", kill_on_drop: false }`
[INFO] [stderr]     Checking prepro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/state_machine.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn step(&mut self, state: StateMachine) -> StateMachine
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/state_machine.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let context = Context::new(input);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `StateMachine` is never used
[INFO] [stdout]   --> src/state_machine.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum StateMachine
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StateMachine` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Text` and `Command` are never constructed
[INFO] [stdout]   --> src/state_machine.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum Chunk
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 22 | {
[INFO] [stdout] 23 |     Text(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     Command(Receiver<String>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Chunk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `chunks` are never read
[INFO] [stdout]   --> src/state_machine.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Context
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 29 | {
[INFO] [stdout] 30 |     input: Vec<char>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 31 |     chunks: Vec<Chunk>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Context` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_char`, `step`, and `collapse` are never used
[INFO] [stdout]   --> src/state_machine.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Context
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn read_char(&mut self) -> Option<char>
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn step(&mut self, state: StateMachine) -> StateMachine
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn collapse(self) -> Result<String, PreproError>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NoClosingBracket` is never constructed
[INFO] [stdout]  --> src/state_machine/error.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum PreproError
[INFO] [stdout]   |          ----------- variant in this enum
[INFO] [stdout] 5 | {
[INFO] [stdout] 6 |     NoClosingBracket,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PreproError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseCommand` is never used
[INFO] [stdout]  --> src/state_machine/parse_command.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum ParseCommand
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParseCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_command` is never used
[INFO] [stdout]   --> src/state_machine/parse_command.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Context
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 14 | {
[INFO] [stdout] 15 |     pub fn parse_command(&mut self) -> StateMachine
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseText` is never used
[INFO] [stdout]  --> src/state_machine/parse_text.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum ParseText
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParseText` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_text` is never used
[INFO] [stdout]   --> src/state_machine/parse_text.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Context
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 16 | {
[INFO] [stdout] 17 |     pub fn parse_text(&mut self) -> StateMachine
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/state_machine.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn step(&mut self, state: StateMachine) -> StateMachine
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]   --> src/state_machine.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let context = Context::new(input);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ParseText`, `ParseCommand`, and `Done` are never constructed
[INFO] [stdout]   --> src/state_machine.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum StateMachine
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     ParseText,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 13 |     StoreTextChunk(String),
[INFO] [stdout] 14 |     ParseCommand,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 15 |     StoreCommandChunk(String),
[INFO] [stdout] 16 |     Done,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StateMachine` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Text` and `Command` are never constructed
[INFO] [stdout]   --> src/state_machine.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum Chunk
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 22 | {
[INFO] [stdout] 23 |     Text(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     Command(Receiver<String>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Chunk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `chunks` is never read
[INFO] [stdout]   --> src/state_machine.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Context
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     chunks: Vec<Chunk>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Context` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `step` and `collapse` are never used
[INFO] [stdout]   --> src/state_machine.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Context
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn step(&mut self, state: StateMachine) -> StateMachine
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn collapse(self) -> Result<String, PreproError>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NoClosingBracket` is never constructed
[INFO] [stdout]  --> src/state_machine/error.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum PreproError
[INFO] [stdout]   |          ----------- variant in this enum
[INFO] [stdout] 5 | {
[INFO] [stdout] 6 |     NoClosingBracket,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PreproError` 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 `parse_command_containing_brackets_with_no_closing` is never used
[INFO] [stdout]   --> src/state_machine/parse_command.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn parse_command_containing_brackets_with_no_closing()
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "17cb4f62530709796043705ca24378acbef51a103ea54030373dd0ae51bcb4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17cb4f62530709796043705ca24378acbef51a103ea54030373dd0ae51bcb4a1", kill_on_drop: false }`
[INFO] [stdout] 17cb4f62530709796043705ca24378acbef51a103ea54030373dd0ae51bcb4a1