[INFO] fetching crate rust_vm 0.1.0...
[INFO] building rust_vm-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate rust_vm 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate rust_vm 0.1.0
[INFO] finished tweaking crates.io crate rust_vm 0.1.0
[INFO] tweaked toml for crates.io crate rust_vm 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_vm 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust_vm 0.1.0 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30e5a676531c5bfacd97e8571282f619a6fb5cc2fdc5608c9b2b8940bbe0f7ab
[INFO] running `Command { std: "docker" "start" "-a" "30e5a676531c5bfacd97e8571282f619a6fb5cc2fdc5608c9b2b8940bbe0f7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30e5a676531c5bfacd97e8571282f619a6fb5cc2fdc5608c9b2b8940bbe0f7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e5a676531c5bfacd97e8571282f619a6fb5cc2fdc5608c9b2b8940bbe0f7ab", kill_on_drop: false }`
[INFO] [stdout] 30e5a676531c5bfacd97e8571282f619a6fb5cc2fdc5608c9b2b8940bbe0f7ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17d93441dc1c038d418d036e5b8268c20378aa06803f0a0e37c207b43ca358c2
[INFO] running `Command { std: "docker" "start" "-a" "17d93441dc1c038d418d036e5b8268c20378aa06803f0a0e37c207b43ca358c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rust_vm::RustVM`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rust_vm::RustVM;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/rust_vm.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let data = ins.data;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust_vm.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut ins = self.next_instruction();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `INSTRUCTION_BYTES` is never used
[INFO] [stdout]  --> src/rust_vm.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub static INSTRUCTION_BYTES:usize = 4;
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fmt` is never used
[INFO] [stdout]   --> src/rust_vm.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl VMstate {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 14 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `size` is never used
[INFO] [stdout]   --> src/rust_vm.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Instruction {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn size() -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_ip` and `get_instruction_length` are never used
[INFO] [stdout]   --> src/rust_vm.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl RustVM {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 71 |     pub fn get_ip(&mut self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn get_instruction_length() -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "17d93441dc1c038d418d036e5b8268c20378aa06803f0a0e37c207b43ca358c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d93441dc1c038d418d036e5b8268c20378aa06803f0a0e37c207b43ca358c2", kill_on_drop: false }`
[INFO] [stdout] 17d93441dc1c038d418d036e5b8268c20378aa06803f0a0e37c207b43ca358c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9154727588d535f85f6afa2e110feb46280cc77de636520f39a2070cfcc42e56
[INFO] running `Command { std: "docker" "start" "-a" "9154727588d535f85f6afa2e110feb46280cc77de636520f39a2070cfcc42e56", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/rust_vm.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let data = ins.data;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust_vm.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut ins = self.next_instruction();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fmt` is never used
[INFO] [stdout]   --> src/rust_vm.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl VMstate {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 14 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "9154727588d535f85f6afa2e110feb46280cc77de636520f39a2070cfcc42e56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9154727588d535f85f6afa2e110feb46280cc77de636520f39a2070cfcc42e56", kill_on_drop: false }`
[INFO] [stdout] 9154727588d535f85f6afa2e110feb46280cc77de636520f39a2070cfcc42e56