[INFO] cloning repository https://github.com/luki/calc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luki/calc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluki%2Fcalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluki%2Fcalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e94a9c6cdbcbee76e3fa3ec0df01c6336628f919
[INFO] testing luki/calc against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluki%2Fcalc" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luki/calc on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/luki/calc
[INFO] finished tweaking git repo https://github.com/luki/calc
[INFO] tweaked toml for git repo https://github.com/luki/calc written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/luki/calc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0034ef18ef2b66fa61bbc4a6b112edf23420a452f9fd43c8bca3890538345f6
[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" "e0034ef18ef2b66fa61bbc4a6b112edf23420a452f9fd43c8bca3890538345f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0034ef18ef2b66fa61bbc4a6b112edf23420a452f9fd43c8bca3890538345f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0034ef18ef2b66fa61bbc4a6b112edf23420a452f9fd43c8bca3890538345f6", kill_on_drop: false }`
[INFO] [stdout] e0034ef18ef2b66fa61bbc4a6b112edf23420a452f9fd43c8bca3890538345f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 961a4b016083a30f1ed8a9c6e4141844db9a70a6000a43732407e3288319905b
[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" "961a4b016083a30f1ed8a9c6e4141844db9a70a6000a43732407e3288319905b", kill_on_drop: false }`
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `calc`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let calc = Calc::new();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_calc`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]   --> src/operations.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtract`
[INFO] [stdout]   --> src/operations.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Subtract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Multiply`
[INFO] [stdout]   --> src/operations.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Multiply,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Divide`
[INFO] [stdout]   --> src/operations.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Divide
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "961a4b016083a30f1ed8a9c6e4141844db9a70a6000a43732407e3288319905b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "961a4b016083a30f1ed8a9c6e4141844db9a70a6000a43732407e3288319905b", kill_on_drop: false }`
[INFO] [stdout] 961a4b016083a30f1ed8a9c6e4141844db9a70a6000a43732407e3288319905b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1f86da815e10142acb529bb857d24c1ad9aca9a6d9c0f6a6878201456b943ac
[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" "b1f86da815e10142acb529bb857d24c1ad9aca9a6d9c0f6a6878201456b943ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `calc`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let calc = Calc::new();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_calc`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]   --> src/operations.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtract`
[INFO] [stdout]   --> src/operations.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Subtract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Multiply`
[INFO] [stdout]   --> src/operations.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Multiply,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Divide`
[INFO] [stdout]   --> src/operations.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Divide
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "b1f86da815e10142acb529bb857d24c1ad9aca9a6d9c0f6a6878201456b943ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f86da815e10142acb529bb857d24c1ad9aca9a6d9c0f6a6878201456b943ac", kill_on_drop: false }`
[INFO] [stdout] b1f86da815e10142acb529bb857d24c1ad9aca9a6d9c0f6a6878201456b943ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] daa19320ee6b1fabe2de73afd1a2b26ef7266283bb4cecaee3f72a5d15b1a76a
[INFO] running `Command { std: "docker" "start" "-a" "daa19320ee6b1fabe2de73afd1a2b26ef7266283bb4cecaee3f72a5d15b1a76a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `calc`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 7 |     let calc = Calc::new();
[INFO] [stdout] 
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_calc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Add`
[INFO] [stderr]   --> src/operations.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Add,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subtract`
[INFO] [stderr]   --> src/operations.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Subtract,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Multiply`
[INFO] [stderr]   --> src/operations.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Multiply,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Divide`
[INFO] [stderr]   --> src/operations.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Divide
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `calc` (bin "calc" test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/calc-f072f12377c7fd8e)
[INFO] running `Command { std: "docker" "inspect" "daa19320ee6b1fabe2de73afd1a2b26ef7266283bb4cecaee3f72a5d15b1a76a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daa19320ee6b1fabe2de73afd1a2b26ef7266283bb4cecaee3f72a5d15b1a76a", kill_on_drop: false }`
[INFO] [stdout] daa19320ee6b1fabe2de73afd1a2b26ef7266283bb4cecaee3f72a5d15b1a76a