[INFO] cloning repository https://github.com/tedbauer/bril-analyzer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tedbauer/bril-analyzer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftedbauer%2Fbril-analyzer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftedbauer%2Fbril-analyzer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd35e01b262d2b5c2b15f34eb433874cb0f5942a
[INFO] checking tedbauer/bril-analyzer against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftedbauer%2Fbril-analyzer" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tedbauer/bril-analyzer on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tedbauer/bril-analyzer
[INFO] finished tweaking git repo https://github.com/tedbauer/bril-analyzer
[INFO] tweaked toml for git repo https://github.com/tedbauer/bril-analyzer written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/tedbauer/bril-analyzer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cf77f9c8004a257122b1903840671057b79a2fb387df6d3f3d56b14b2a8727f
[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" "5cf77f9c8004a257122b1903840671057b79a2fb387df6d3f3d56b14b2a8727f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cf77f9c8004a257122b1903840671057b79a2fb387df6d3f3d56b14b2a8727f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cf77f9c8004a257122b1903840671057b79a2fb387df6d3f3d56b14b2a8727f", kill_on_drop: false }`
[INFO] [stdout] 5cf77f9c8004a257122b1903840671057b79a2fb387df6d3f3d56b14b2a8727f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df21859388bd2d362f8ad689bd59a955bd498ead7535a4a2768786dc53387f7f
[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" "df21859388bd2d362f8ad689bd59a955bd498ead7535a4a2768786dc53387f7f", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking bril-analyzer v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/prog.rs (1 fix)
[INFO] [stderr]        Fixed src/count_divs.rs (2 fixes)
[INFO] [stderr]        Fixed src/cfg.rs (3 fixes)
[INFO] [stderr]        Fixed src/main.rs (2 fixes)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/prog.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]   |          --------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 20 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/prog.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]   |          --------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 20 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CFG`
[INFO] [stdout]  --> src/cfg.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CFG {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Block`
[INFO] [stdout]   --> src/cfg.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Block<'a> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_instr`
[INFO] [stdout]   --> src/cfg.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn add_instr(&mut self, i: &'a Instruction) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_instr`
[INFO] [stdout]   --> src/cfg.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn get_instr(&self, idx: usize) -> &Instruction {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_fresh_name`
[INFO] [stdout]   --> src/cfg.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn gen_fresh_name(prefix: &String, name_map: &HashMap<String, &Block>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_name_map`
[INFO] [stdout]   --> src/cfg.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn gen_name_map<'a>(blocks: &'a Vec<Block>) -> HashMap<String, &'a Block<'a>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_blocks`
[INFO] [stdout]   --> src/cfg.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_blocks(instrs: &Vec<Instruction>) -> Vec<Block> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_cfg`
[INFO] [stdout]   --> src/cfg.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn gen_cfg(p: Program) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CFG`
[INFO] [stdout]  --> src/cfg.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CFG {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Block`
[INFO] [stdout]   --> src/cfg.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Block<'a> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_instr`
[INFO] [stdout]   --> src/cfg.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn add_instr(&mut self, i: &'a Instruction) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_instr`
[INFO] [stdout]   --> src/cfg.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn get_instr(&self, idx: usize) -> &Instruction {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_fresh_name`
[INFO] [stdout]   --> src/cfg.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn gen_fresh_name(prefix: &String, name_map: &HashMap<String, &Block>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_name_map`
[INFO] [stdout]   --> src/cfg.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn gen_name_map<'a>(blocks: &'a Vec<Block>) -> HashMap<String, &'a Block<'a>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_blocks`
[INFO] [stdout]   --> src/cfg.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_blocks(instrs: &Vec<Instruction>) -> Vec<Block> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_cfg`
[INFO] [stdout]   --> src/cfg.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn gen_cfg(p: Program) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.16s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking bril-analyzer v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/prog.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]   |          --------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 20 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CFG`
[INFO] [stdout]  --> src/cfg.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CFG {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Block`
[INFO] [stdout]   --> src/cfg.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Block<'a> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_instr`
[INFO] [stdout]   --> src/cfg.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn add_instr(&mut self, i: &'a Instruction) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_instr`
[INFO] [stdout]   --> src/cfg.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn get_instr(&self, idx: usize) -> &Instruction {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_fresh_name`
[INFO] [stdout]   --> src/cfg.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn gen_fresh_name(prefix: &String, name_map: &HashMap<String, &Block>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_name_map`
[INFO] [stdout]   --> src/cfg.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn gen_name_map<'a>(blocks: &'a Vec<Block>) -> HashMap<String, &'a Block<'a>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_blocks`
[INFO] [stdout]   --> src/cfg.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_blocks(instrs: &Vec<Instruction>) -> Vec<Block> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_cfg`
[INFO] [stdout]   --> src/cfg.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn gen_cfg(p: Program) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/prog.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]   |          --------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/prog.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 20 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CFG`
[INFO] [stdout]  --> src/cfg.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CFG {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Block`
[INFO] [stdout]   --> src/cfg.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Block<'a> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_instr`
[INFO] [stdout]   --> src/cfg.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn add_instr(&mut self, i: &'a Instruction) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_instr`
[INFO] [stdout]   --> src/cfg.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn get_instr(&self, idx: usize) -> &Instruction {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_fresh_name`
[INFO] [stdout]   --> src/cfg.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn gen_fresh_name(prefix: &String, name_map: &HashMap<String, &Block>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_name_map`
[INFO] [stdout]   --> src/cfg.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn gen_name_map<'a>(blocks: &'a Vec<Block>) -> HashMap<String, &'a Block<'a>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_blocks`
[INFO] [stdout]   --> src/cfg.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_blocks(instrs: &Vec<Instruction>) -> Vec<Block> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_cfg`
[INFO] [stdout]   --> src/cfg.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn gen_cfg(p: Program) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "df21859388bd2d362f8ad689bd59a955bd498ead7535a4a2768786dc53387f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df21859388bd2d362f8ad689bd59a955bd498ead7535a4a2768786dc53387f7f", kill_on_drop: false }`
[INFO] [stdout] df21859388bd2d362f8ad689bd59a955bd498ead7535a4a2768786dc53387f7f