[INFO] cloning repository https://github.com/dihnometry/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dihnometry/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdihnometry%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdihnometry%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bed715024b891cfc406fd4fc27cbd3c5fbd363f6
[INFO] checking dihnometry/rlox against try#4797991aa2efb6d658150f10425b3f3b5d10eceb for pr-143193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdihnometry%2Frlox" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dihnometry/rlox
[INFO] finished tweaking git repo https://github.com/dihnometry/rlox
[INFO] tweaked toml for git repo https://github.com/dihnometry/rlox written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dihnometry/rlox on toolchain 4797991aa2efb6d658150f10425b3f3b5d10eceb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dihnometry/rlox 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" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "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 dihnometry/rlox against try#4797991aa2efb6d658150f10425b3f3b5d10eceb for pr-143193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdihnometry%2Frlox" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dihnometry/rlox
[INFO] finished tweaking git repo https://github.com/dihnometry/rlox
[INFO] tweaked toml for git repo https://github.com/dihnometry/rlox written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dihnometry/rlox on toolchain 4797991aa2efb6d658150f10425b3f3b5d10eceb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dihnometry/rlox 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" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79d05951e78a295c61626c40cc37d22e104181c39b167204178c6dea597642a8
[INFO] running `Command { std: "docker" "start" "-a" "79d05951e78a295c61626c40cc37d22e104181c39b167204178c6dea597642a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79d05951e78a295c61626c40cc37d22e104181c39b167204178c6dea597642a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79d05951e78a295c61626c40cc37d22e104181c39b167204178c6dea597642a8", kill_on_drop: false }`
[INFO] [stdout] 79d05951e78a295c61626c40cc37d22e104181c39b167204178c6dea597642a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+4797991aa2efb6d658150f10425b3f3b5d10eceb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b40ae17d45028441036ff8dd83b60e0e8e5f43830e2deaaa9087b469381f6c04
[INFO] running `Command { std: "docker" "start" "-a" "b40ae17d45028441036ff8dd83b60e0e8e5f43830e2deaaa9087b469381f6c04", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `AstPrinter` is never constructed
[INFO] [stdout]  --> src/ast_printer.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct AstPrinter;
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `print`, `parenthesize`, and `get_expression_string` are never used
[INFO] [stdout]   --> src/ast_printer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl AstPrinter {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 29 |     pub fn print(expr: &Expr, visitor: &impl Visitor<String>) -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn parenthesize(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get_expression_string(expr: &Expr, visitor: &impl Visitor<String>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `synchronize` is never used
[INFO] [stdout]    --> src/parser.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 10  | impl<'a> Parser {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn synchronize(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AstPrinter` is never constructed
[INFO] [stdout]  --> src/ast_printer.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct AstPrinter;
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `print`, `parenthesize`, and `get_expression_string` are never used
[INFO] [stdout]   --> src/ast_printer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl AstPrinter {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 29 |     pub fn print(expr: &Expr, visitor: &impl Visitor<String>) -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn parenthesize(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get_expression_string(expr: &Expr, visitor: &impl Visitor<String>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `synchronize` is never used
[INFO] [stdout]    --> src/parser.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 10  | impl<'a> Parser {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn synchronize(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/parser.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn consume(&'a mut self, ttype: &'a TokenType, error_msg: String) -> Result<&Token, LoxParseError> {
[INFO] [stdout]     |                 ^^                   ^^ these lifetimes flow to the output      ------ the lifetime gets resolved as `'a`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn consume(&'a mut self, ttype: &'a TokenType, error_msg: String) -> Result<&'a Token, LoxParseError> {
[INFO] [stdout]     |                                                                                  ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/parser.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn consume(&'a mut self, ttype: &'a TokenType, error_msg: String) -> Result<&Token, LoxParseError> {
[INFO] [stdout]     |                 ^^                   ^^ these lifetimes flow to the output      ------ the lifetime gets resolved as `'a`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn consume(&'a mut self, ttype: &'a TokenType, error_msg: String) -> Result<&'a Token, LoxParseError> {
[INFO] [stdout]     |                                                                                  ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "b40ae17d45028441036ff8dd83b60e0e8e5f43830e2deaaa9087b469381f6c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40ae17d45028441036ff8dd83b60e0e8e5f43830e2deaaa9087b469381f6c04", kill_on_drop: false }`
[INFO] [stdout] b40ae17d45028441036ff8dd83b60e0e8e5f43830e2deaaa9087b469381f6c04