[INFO] cloning repository https://github.com/vladborsh/rs-calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vladborsh/rs-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladborsh%2Frs-calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladborsh%2Frs-calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 569ebba7c3e8113a41072665288851b45a256685
[INFO] testing vladborsh/rs-calculator against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladborsh%2Frs-calculator" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vladborsh/rs-calculator
[INFO] finished tweaking git repo https://github.com/vladborsh/rs-calculator
[INFO] tweaked toml for git repo https://github.com/vladborsh/rs-calculator written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vladborsh/rs-calculator on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vladborsh/rs-calculator 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95ea0da2521bf03cd8070a1cd8d247a5f61d0aa4558c8eb9ea7c93b60d80293a
[INFO] running `Command { std: "docker" "start" "-a" "95ea0da2521bf03cd8070a1cd8d247a5f61d0aa4558c8eb9ea7c93b60d80293a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95ea0da2521bf03cd8070a1cd8d247a5f61d0aa4558c8eb9ea7c93b60d80293a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95ea0da2521bf03cd8070a1cd8d247a5f61d0aa4558c8eb9ea7c93b60d80293a", kill_on_drop: false }`
[INFO] [stdout] 95ea0da2521bf03cd8070a1cd8d247a5f61d0aa4558c8eb9ea7c93b60d80293a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17d31b057b587919d6b0e04ac7ef90ac377038dfa608bff552a85a59b59a93a4
[INFO] running `Command { std: "docker" "start" "-a" "17d31b057b587919d6b0e04ac7ef90ac377038dfa608bff552a85a59b59a93a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `cursor` is never used
[INFO] [stdout]   --> src/stack.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl <T>Stack<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn cursor(&self) -> Cursor<'_, T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cursor` is never constructed
[INFO] [stdout]   --> src/stack.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Cursor<'s, T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek` and `advance` are never used
[INFO] [stdout]   --> src/stack.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl <'a, T> Cursor<'a, T> {
[INFO] [stdout]    | -------------------------- methods in this implementation
[INFO] [stdout] 48 |     pub fn peek(&self) -> Option<&'a T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn advance(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "17d31b057b587919d6b0e04ac7ef90ac377038dfa608bff552a85a59b59a93a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d31b057b587919d6b0e04ac7ef90ac377038dfa608bff552a85a59b59a93a4", kill_on_drop: false }`
[INFO] [stdout] 17d31b057b587919d6b0e04ac7ef90ac377038dfa608bff552a85a59b59a93a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aff0d3a7704616c7e90c06ddef02ca8db2d7bb5b026fcc56e3772f9891df32c4
[INFO] running `Command { std: "docker" "start" "-a" "aff0d3a7704616c7e90c06ddef02ca8db2d7bb5b026fcc56e3772f9891df32c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `cursor` is never used
[INFO] [stdout]   --> src/stack.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl <T>Stack<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn cursor(&self) -> Cursor<'_, T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cursor` is never constructed
[INFO] [stdout]   --> src/stack.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Cursor<'s, T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek` and `advance` are never used
[INFO] [stdout]   --> src/stack.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl <'a, T> Cursor<'a, T> {
[INFO] [stdout]    | -------------------------- methods in this implementation
[INFO] [stdout] 48 |     pub fn peek(&self) -> Option<&'a T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn advance(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "aff0d3a7704616c7e90c06ddef02ca8db2d7bb5b026fcc56e3772f9891df32c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aff0d3a7704616c7e90c06ddef02ca8db2d7bb5b026fcc56e3772f9891df32c4", kill_on_drop: false }`
[INFO] [stdout] aff0d3a7704616c7e90c06ddef02ca8db2d7bb5b026fcc56e3772f9891df32c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b28aeead2d38315ce203bfc865458dcc2c658e755d91b0fa7dd9f912dfe1d7d
[INFO] running `Command { std: "docker" "start" "-a" "7b28aeead2d38315ce203bfc865458dcc2c658e755d91b0fa7dd9f912dfe1d7d", kill_on_drop: false }`
[INFO] [stderr] warning: method `cursor` is never used
[INFO] [stderr]   --> src/stack.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl <T>Stack<T> {
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 36 |     pub fn cursor(&self) -> Cursor<'_, T> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Cursor` is never constructed
[INFO] [stderr]   --> src/stack.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub struct Cursor<'s, T> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `peek` and `advance` are never used
[INFO] [stderr]   --> src/stack.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl <'a, T> Cursor<'a, T> {
[INFO] [stderr]    | -------------------------- methods in this implementation
[INFO] [stderr] 48 |     pub fn peek(&self) -> Option<&'a T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 52 |     pub fn advance(&mut self) {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `calculator` (bin "calculator" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/calculator-c26707604600c006)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b28aeead2d38315ce203bfc865458dcc2c658e755d91b0fa7dd9f912dfe1d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b28aeead2d38315ce203bfc865458dcc2c658e755d91b0fa7dd9f912dfe1d7d", kill_on_drop: false }`
[INFO] [stdout] 7b28aeead2d38315ce203bfc865458dcc2c658e755d91b0fa7dd9f912dfe1d7d