[INFO] cloning repository https://github.com/cout970/micro_vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cout970/micro_vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcout970%2Fmicro_vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcout970%2Fmicro_vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cf5f2ecfe8a313faf52affc123dbc4f7f0313f7
[INFO] checking cout970/micro_vm/2cf5f2ecfe8a313faf52affc123dbc4f7f0313f7 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcout970%2Fmicro_vm" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cout970/micro_vm on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cout970/micro_vm
[INFO] finished tweaking git repo https://github.com/cout970/micro_vm
[INFO] tweaked toml for git repo https://github.com/cout970/micro_vm written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cout970/micro_vm 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff6b468539675c7c0951ff5ba39e82b67afb7a92e61c2564fba9bcfcfabe7caf
[INFO] running `Command { std: "docker" "start" "-a" "ff6b468539675c7c0951ff5ba39e82b67afb7a92e61c2564fba9bcfcfabe7caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff6b468539675c7c0951ff5ba39e82b67afb7a92e61c2564fba9bcfcfabe7caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff6b468539675c7c0951ff5ba39e82b67afb7a92e61c2564fba9bcfcfabe7caf", kill_on_drop: false }`
[INFO] [stdout] ff6b468539675c7c0951ff5ba39e82b67afb7a92e61c2564fba9bcfcfabe7caf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a993229f96517083b975229b59f6d72bebf720a67bf92f005a19d1ba95e32d2d
[INFO] running `Command { std: "docker" "start" "-a" "a993229f96517083b975229b59f6d72bebf720a67bf92f005a19d1ba95e32d2d", kill_on_drop: false }`
[INFO] [stderr]     Checking vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ParsedInst` and `print_tokens`
[INFO] [stdout]  --> src/main.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::assembler::{ParsedInst, Parser, print_tokens, read_all_tokens, Compiler};
[INFO] [stdout]   |                        ^^^^^^^^^^          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/vm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/vm.rs:176:25
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         ;
[INFO] [stdout]     |                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParsedInst`
[INFO] [stdout]  --> src/main.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::assembler::{ParsedInst, Parser, print_tokens, read_all_tokens, Compiler};
[INFO] [stdout]   |                        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/vm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/vm.rs:176:25
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         ;
[INFO] [stdout]     |                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0624]: method `precompile` is private
[INFO] [stdout]    --> src/main.rs:69:18
[INFO] [stdout]     |
[INFO] [stdout] 69  |         compiler.precompile(&parsed).expect("Unable to compiled");
[INFO] [stdout]     |                  ^^^^^^^^^^ private method
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/assembler.rs:441:5
[INFO] [stdout]     |
[INFO] [stdout] 441 |     fn precompile(&mut self, insts: &Vec<ParsedInst>) -> Result<Vec<PrecompiledInst>, String> {
[INFO] [stdout]     |     ----------------------------------------------------------------------------------------- private method defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 Inst::Nop => {}
[INFO] [stdout]     |                 --------- matches some of the same values
[INFO] [stdout] 101 |                 Inst::Exit => { return; }
[INFO] [stdout]     |                 ---------- matches some of the same values
[INFO] [stdout] 102 |                 Inst::JumpFw => {
[INFO] [stdout]     |                 ------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 105 |                 Inst::JumpBw => {
[INFO] [stdout]     |                 ------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 309 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 22 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 Inst::Nop => {}
[INFO] [stdout]     |                 --------- matches some of the same values
[INFO] [stdout] 101 |                 Inst::Exit => { return; }
[INFO] [stdout]     |                 ---------- matches some of the same values
[INFO] [stdout] 102 |                 Inst::JumpFw => {
[INFO] [stdout]     |                 ------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 105 |                 Inst::JumpBw => {
[INFO] [stdout]     |                 ------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 309 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 22 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembler.rs:393:9
[INFO] [stdout]     |
[INFO] [stdout] 393 |         self.precompile(insts);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 393 |         let _ = self.precompile(insts);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0624`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vm` (bin "vm" test) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a993229f96517083b975229b59f6d72bebf720a67bf92f005a19d1ba95e32d2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a993229f96517083b975229b59f6d72bebf720a67bf92f005a19d1ba95e32d2d", kill_on_drop: false }`
[INFO] [stdout] a993229f96517083b975229b59f6d72bebf720a67bf92f005a19d1ba95e32d2d