[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] testing vanhtuan0409/rust-calculator against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvanhtuan0409%2Frust-calculator" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vanhtuan0409/rust-calculator on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", 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-13/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfa6a9f7730e499f36d9d2840253241a97c04ebf0f530aee16614e2b4f907523
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bfa6a9f7730e499f36d9d2840253241a97c04ebf0f530aee16614e2b4f907523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfa6a9f7730e499f36d9d2840253241a97c04ebf0f530aee16614e2b4f907523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfa6a9f7730e499f36d9d2840253241a97c04ebf0f530aee16614e2b4f907523", kill_on_drop: false }`
[INFO] [stdout] bfa6a9f7730e499f36d9d2840253241a97c04ebf0f530aee16614e2b4f907523
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3d171a4064acd99e8e91e21bb120f0b4000e2acb6d9f15acf615e51e8468515
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c3d171a4064acd99e8e91e21bb120f0b4000e2acb6d9f15acf615e51e8468515", kill_on_drop: false }`
[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 1.05s
[INFO] running `Command { std: "docker" "inspect" "c3d171a4064acd99e8e91e21bb120f0b4000e2acb6d9f15acf615e51e8468515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3d171a4064acd99e8e91e21bb120f0b4000e2acb6d9f15acf615e51e8468515", kill_on_drop: false }`
[INFO] [stdout] c3d171a4064acd99e8e91e21bb120f0b4000e2acb6d9f15acf615e51e8468515
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56c083c590a72b703a8ff30b4449a660b303ad2b2a43f49360675aa8f42938e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f56c083c590a72b703a8ff30b4449a660b303ad2b2a43f49360675aa8f42938e", kill_on_drop: false }`
[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 test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "f56c083c590a72b703a8ff30b4449a660b303ad2b2a43f49360675aa8f42938e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56c083c590a72b703a8ff30b4449a660b303ad2b2a43f49360675aa8f42938e", kill_on_drop: false }`
[INFO] [stdout] f56c083c590a72b703a8ff30b4449a660b303ad2b2a43f49360675aa8f42938e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 71755370e7f47eb887b2616a9f925510289964ecbcfa7d9d8d9634a81aef806f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "71755370e7f47eb887b2616a9f925510289964ecbcfa7d9d8d9634a81aef806f", kill_on_drop: false }`
[INFO] [stderr] warning: enum is never used: `Op`
[INFO] [stderr]  --> src/ast.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub enum Op {
[INFO] [stderr]   |          ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expression`
[INFO] [stderr]   --> src/ast.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub enum Expression {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `BinaryExpression`
[INFO] [stderr]   --> src/ast.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct BinaryExpression {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `UnaryExpression`
[INFO] [stderr]   --> src/ast.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct UnaryExpression {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AstParser`
[INFO] [stderr]   --> src/ast.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct AstParser {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `AstParseError`
[INFO] [stderr]   --> src/ast.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub enum AstParseError {
[INFO] [stderr]    |          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/ast.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new(tokens: Tokenizer) -> AstParser {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parse`
[INFO] [stderr]   --> src/ast.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn parse(&mut self) -> Result<Expression, AstParseError> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_calculator-5492828f4f877e83
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "71755370e7f47eb887b2616a9f925510289964ecbcfa7d9d8d9634a81aef806f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71755370e7f47eb887b2616a9f925510289964ecbcfa7d9d8d9634a81aef806f", kill_on_drop: false }`
[INFO] [stdout] 71755370e7f47eb887b2616a9f925510289964ecbcfa7d9d8d9634a81aef806f