[INFO] cloning repository https://github.com/vanhtuan0409/rust-calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vanhtuan0409/rust-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvanhtuan0409%2Frust-calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvanhtuan0409%2Frust-calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 228cde0c72b5491ca8d81ff74928b88ad0f99aa3
[INFO] building vanhtuan0409/rust-calculator against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvanhtuan0409%2Frust-calculator" "/workspace/builds/worker-69/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-69/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vanhtuan0409/rust-calculator on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vanhtuan0409/rust-calculator
[INFO] finished tweaking git repo https://github.com/vanhtuan0409/rust-calculator
[INFO] tweaked toml for git repo https://github.com/vanhtuan0409/rust-calculator written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] crate git repo https://github.com/vanhtuan0409/rust-calculator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "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-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39a58acc32d3b9a09f520d57c0104bc9bb3f6f948edb1998569198ef980d3b1d
[INFO] running `Command { std: "docker" "start" "-a" "39a58acc32d3b9a09f520d57c0104bc9bb3f6f948edb1998569198ef980d3b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39a58acc32d3b9a09f520d57c0104bc9bb3f6f948edb1998569198ef980d3b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39a58acc32d3b9a09f520d57c0104bc9bb3f6f948edb1998569198ef980d3b1d", kill_on_drop: false }`
[INFO] [stdout] 39a58acc32d3b9a09f520d57c0104bc9bb3f6f948edb1998569198ef980d3b1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b18159b67a2daccf1e7b238536382541fb9072d0b1c7079938b42f0368d786d3
[INFO] running `Command { std: "docker" "start" "-a" "b18159b67a2daccf1e7b238536382541fb9072d0b1c7079938b42f0368d786d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Op`
[INFO] [stdout]  --> src/ast.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Op {
[INFO] [stdout]   |          ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]   --> src/ast.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum Expression {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BinaryExpression`
[INFO] [stdout]   --> src/ast.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct BinaryExpression {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `UnaryExpression`
[INFO] [stdout]   --> src/ast.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct UnaryExpression {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `AstParser`
[INFO] [stdout]   --> src/ast.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct AstParser {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `AstParseError`
[INFO] [stdout]   --> src/ast.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub enum AstParseError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ast.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(tokens: Tokenizer) -> AstParser {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]   --> src/ast.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn parse(&mut self) -> Result<Expression, AstParseError> {
[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 15.49s
[INFO] running `Command { std: "docker" "inspect" "b18159b67a2daccf1e7b238536382541fb9072d0b1c7079938b42f0368d786d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b18159b67a2daccf1e7b238536382541fb9072d0b1c7079938b42f0368d786d3", kill_on_drop: false }`
[INFO] [stdout] b18159b67a2daccf1e7b238536382541fb9072d0b1c7079938b42f0368d786d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9d45cf9b1d8aec8ffb030f6d545390f8128d66cf3d035b25f723543d413548d
[INFO] running `Command { std: "docker" "start" "-a" "b9d45cf9b1d8aec8ffb030f6d545390f8128d66cf3d035b25f723543d413548d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "b9d45cf9b1d8aec8ffb030f6d545390f8128d66cf3d035b25f723543d413548d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9d45cf9b1d8aec8ffb030f6d545390f8128d66cf3d035b25f723543d413548d", kill_on_drop: false }`
[INFO] [stdout] b9d45cf9b1d8aec8ffb030f6d545390f8128d66cf3d035b25f723543d413548d