[INFO] cloning repository https://github.com/MathematicalDessert/Acorn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MathematicalDessert/Acorn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathematicalDessert%2FAcorn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathematicalDessert%2FAcorn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5cc0a6e486a4fbd0d0b4c1f234fc494b6d8a4960
[INFO] testing MathematicalDessert/Acorn against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathematicalDessert%2FAcorn" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MathematicalDessert/Acorn on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MathematicalDessert/Acorn
[INFO] finished tweaking git repo https://github.com/MathematicalDessert/Acorn
[INFO] tweaked toml for git repo https://github.com/MathematicalDessert/Acorn written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/MathematicalDessert/Acorn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6810e16f9bb2e20a697cc274d078e1aa467c267ff7887dd3d980d836afcf78f
[INFO] running `Command { std: "docker" "start" "-a" "b6810e16f9bb2e20a697cc274d078e1aa467c267ff7887dd3d980d836afcf78f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6810e16f9bb2e20a697cc274d078e1aa467c267ff7887dd3d980d836afcf78f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6810e16f9bb2e20a697cc274d078e1aa467c267ff7887dd3d980d836afcf78f", kill_on_drop: false }`
[INFO] [stdout] b6810e16f9bb2e20a697cc274d078e1aa467c267ff7887dd3d980d836afcf78f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 184afe437c2491b0a9c7965970dd56201ef38a7260c4ab31fc58f0536e3294c5
[INFO] running `Command { std: "docker" "start" "-a" "184afe437c2491b0a9c7965970dd56201ef38a7260c4ab31fc58f0536e3294c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling acorn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `register`
[INFO] [stdout]   --> src/main.rs:82:34
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 Instruction::POP(register) => {
[INFO] [stdout]    |                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_register`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decr_reg`
[INFO] [stdout]   --> src/main.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn decr_reg(&mut self, reg: Register) -> Register {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.73s
[INFO] running `Command { std: "docker" "inspect" "184afe437c2491b0a9c7965970dd56201ef38a7260c4ab31fc58f0536e3294c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "184afe437c2491b0a9c7965970dd56201ef38a7260c4ab31fc58f0536e3294c5", kill_on_drop: false }`
[INFO] [stdout] 184afe437c2491b0a9c7965970dd56201ef38a7260c4ab31fc58f0536e3294c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52d4c981db13b5ed4eaf9ab331483e699db5e2e7762492fe81b17c1a2f512a66
[INFO] running `Command { std: "docker" "start" "-a" "52d4c981db13b5ed4eaf9ab331483e699db5e2e7762492fe81b17c1a2f512a66", kill_on_drop: false }`
[INFO] [stderr]    Compiling acorn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `register`
[INFO] [stdout]   --> src/main.rs:82:34
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 Instruction::POP(register) => {
[INFO] [stdout]    |                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_register`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decr_reg`
[INFO] [stdout]   --> src/main.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn decr_reg(&mut self, reg: Register) -> Register {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "52d4c981db13b5ed4eaf9ab331483e699db5e2e7762492fe81b17c1a2f512a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d4c981db13b5ed4eaf9ab331483e699db5e2e7762492fe81b17c1a2f512a66", kill_on_drop: false }`
[INFO] [stdout] 52d4c981db13b5ed4eaf9ab331483e699db5e2e7762492fe81b17c1a2f512a66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0ee7a8d842352ed99110f4125528c8b54112fb3c71a533de530599c0b818ba42
[INFO] running `Command { std: "docker" "start" "-a" "0ee7a8d842352ed99110f4125528c8b54112fb3c71a533de530599c0b818ba42", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `register`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:82:34
[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] 82 |                 Instruction::POP(register) => {
[INFO] [stdout] 
[INFO] [stderr]    |                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_register`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `decr_reg`
[INFO] [stderr]   --> src/main.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn decr_reg(&mut self, reg: Register) -> Register {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/acorn-80aff76b55aade64)
[INFO] running `Command { std: "docker" "inspect" "0ee7a8d842352ed99110f4125528c8b54112fb3c71a533de530599c0b818ba42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ee7a8d842352ed99110f4125528c8b54112fb3c71a533de530599c0b818ba42", kill_on_drop: false }`
[INFO] [stdout] 0ee7a8d842352ed99110f4125528c8b54112fb3c71a533de530599c0b818ba42