[INFO] fetching crate vixen 0.0.0...
[INFO] checking vixen-0.0.0 against try#d1d7143153307f561233bd4d93e2a3b24157b081 for pr-151539-1
[INFO] extracting crate vixen 0.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate vixen 0.0.0
[INFO] finished tweaking crates.io crate vixen 0.0.0
[INFO] tweaked toml for crates.io crate vixen 0.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vixen 0.0.0 on toolchain d1d7143153307f561233bd4d93e2a3b24157b081
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d1d7143153307f561233bd4d93e2a3b24157b081" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vixen 0.0.0 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" "+d1d7143153307f561233bd4d93e2a3b24157b081" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9
[INFO] running `Command { std: "docker" "start" "fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9" "/opt/rustwide/cargo-home/bin/cargo" "+d1d7143153307f561233bd4d93e2a3b24157b081" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9" "/opt/rustwide/cargo-home/bin/cargo" "+d1d7143153307f561233bd4d93e2a3b24157b081" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking vixen v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Add`, `Jump`, and `JumpIfZero` are never constructed
[INFO] [stdout]   --> src/main.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum Opcode {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout]  7 |     LoadConst = 0x01,
[INFO] [stdout]  8 |     Add = 0x02,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     Jump = 0x07,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     JumpIfZero = 0x08,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opcode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `add`, `jump`, and `jump_if_zero` are never used
[INFO] [stdout]    --> src/main.rs:42:8
[INFO] [stdout]     |
[INFO] [stdout]  29 | impl Instruction {
[INFO] [stdout]     | ---------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  42 |     fn add(dest: u8, src1: u8, src2: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     fn jump(target: usize) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     fn jump_if_zero(src: u8, target: usize) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add`, `Jump`, and `JumpIfZero` are never constructed
[INFO] [stdout]   --> src/main.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum Opcode {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout]  7 |     LoadConst = 0x01,
[INFO] [stdout]  8 |     Add = 0x02,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     Jump = 0x07,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     JumpIfZero = 0x08,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opcode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `add`, `jump`, and `jump_if_zero` are never used
[INFO] [stdout]    --> src/main.rs:42:8
[INFO] [stdout]     |
[INFO] [stdout]  29 | impl Instruction {
[INFO] [stdout]     | ---------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  42 |     fn add(dest: u8, src1: u8, src2: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     fn jump(target: usize) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     fn jump_if_zero(src: u8, target: usize) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9", kill_on_drop: false }`
[INFO] [stdout] fb07bed091bbcacc9b1c803562bf7fa9f98864e89bceef1058d3820d1c4f5de9
