[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#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathematicalDessert%2FAcorn" "/workspace/builds/worker-59/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-59/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MathematicalDessert/Acorn 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/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-59/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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] 52023f084b350035d2ba92539c7edac51babbd33a7158a7d5cd1f2b215dd9651
[INFO] running `Command { std: "docker" "start" "-a" "52023f084b350035d2ba92539c7edac51babbd33a7158a7d5cd1f2b215dd9651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52023f084b350035d2ba92539c7edac51babbd33a7158a7d5cd1f2b215dd9651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52023f084b350035d2ba92539c7edac51babbd33a7158a7d5cd1f2b215dd9651", kill_on_drop: false }`
[INFO] [stdout] 52023f084b350035d2ba92539c7edac51babbd33a7158a7d5cd1f2b215dd9651
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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] fee98ab6434f72b46e86ed4d9a94d9d0746250ae6e8f49967ebe59537c23dcbe
[INFO] running `Command { std: "docker" "start" "-a" "fee98ab6434f72b46e86ed4d9a94d9d0746250ae6e8f49967ebe59537c23dcbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling quote v1.0.9
[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 1m 39s
[INFO] running `Command { std: "docker" "inspect" "fee98ab6434f72b46e86ed4d9a94d9d0746250ae6e8f49967ebe59537c23dcbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fee98ab6434f72b46e86ed4d9a94d9d0746250ae6e8f49967ebe59537c23dcbe", kill_on_drop: false }`
[INFO] [stdout] fee98ab6434f72b46e86ed4d9a94d9d0746250ae6e8f49967ebe59537c23dcbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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] 688a5724200fd0f19f7701ba311ba39113d22ef0a8d051e022fb8d43e3410496
[INFO] running `Command { std: "docker" "start" "-a" "688a5724200fd0f19f7701ba311ba39113d22ef0a8d051e022fb8d43e3410496", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.79s
[INFO] running `Command { std: "docker" "inspect" "688a5724200fd0f19f7701ba311ba39113d22ef0a8d051e022fb8d43e3410496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "688a5724200fd0f19f7701ba311ba39113d22ef0a8d051e022fb8d43e3410496", kill_on_drop: false }`
[INFO] [stdout] 688a5724200fd0f19f7701ba311ba39113d22ef0a8d051e022fb8d43e3410496
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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] [stdout] 3987a5e2ef52d6099f907ec784e1ddb87898a07981d91733cbbd2720a63a0789
[INFO] running `Command { std: "docker" "start" "-a" "3987a5e2ef52d6099f907ec784e1ddb87898a07981d91733cbbd2720a63a0789", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `register`
[INFO] [stdout] 
[INFO] [stderr]   --> src/main.rs:82:34
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 82 |                 Instruction::POP(register) => {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_register`
[INFO] [stdout] 
[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: `acorn` (bin "acorn" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/acorn-166f09a51fec9dc2)
[INFO] running `Command { std: "docker" "inspect" "3987a5e2ef52d6099f907ec784e1ddb87898a07981d91733cbbd2720a63a0789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3987a5e2ef52d6099f907ec784e1ddb87898a07981d91733cbbd2720a63a0789", kill_on_drop: false }`
[INFO] [stdout] 3987a5e2ef52d6099f907ec784e1ddb87898a07981d91733cbbd2720a63a0789