[INFO] cloning repository https://github.com/CluEleSsUK/rust-compiler-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CluEleSsUK/rust-compiler-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCluEleSsUK%2Frust-compiler-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCluEleSsUK%2Frust-compiler-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8aca03b5a9878457c367e46070e6330509eacb56
[INFO] checking CluEleSsUK/rust-compiler-vm against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCluEleSsUK%2Frust-compiler-vm" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CluEleSsUK/rust-compiler-vm on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CluEleSsUK/rust-compiler-vm
[INFO] finished tweaking git repo https://github.com/CluEleSsUK/rust-compiler-vm
[INFO] tweaked toml for git repo https://github.com/CluEleSsUK/rust-compiler-vm written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/CluEleSsUK/rust-compiler-vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbb47a2f9d5d50d41ccdbe52858c34eaa3c8bab806acbdc666dc76f2faeeb58c
[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" "cbb47a2f9d5d50d41ccdbe52858c34eaa3c8bab806acbdc666dc76f2faeeb58c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbb47a2f9d5d50d41ccdbe52858c34eaa3c8bab806acbdc666dc76f2faeeb58c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbb47a2f9d5d50d41ccdbe52858c34eaa3c8bab806acbdc666dc76f2faeeb58c", kill_on_drop: false }`
[INFO] [stdout] cbb47a2f9d5d50d41ccdbe52858c34eaa3c8bab806acbdc666dc76f2faeeb58c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c041c3af38b808307a4164a3c0ab1bff7ff2551aea6bf63b2faafffca3fe9b55
[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" "c041c3af38b808307a4164a3c0ab1bff7ff2551aea6bf63b2faafffca3fe9b55", kill_on_drop: false }`
[INFO] [stderr]     Checking compiler-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let output = vm.run(instructions);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PUSH`
[INFO] [stdout]  --> src/vm.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     PUSH(AddressSize),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `POP`
[INFO] [stdout]  --> src/vm.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     POP,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `STRING`
[INFO] [stdout]   --> src/vm.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     STRING(*mut str),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let output = vm.run(instructions);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut instructions = vec![
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let mut instructions = vec![Instruction::POP];
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vm.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let mut instructions = vec![
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `STRING`
[INFO] [stdout]   --> src/vm.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     STRING(*mut str),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "c041c3af38b808307a4164a3c0ab1bff7ff2551aea6bf63b2faafffca3fe9b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c041c3af38b808307a4164a3c0ab1bff7ff2551aea6bf63b2faafffca3fe9b55", kill_on_drop: false }`
[INFO] [stdout] c041c3af38b808307a4164a3c0ab1bff7ff2551aea6bf63b2faafffca3fe9b55