[INFO] cloning repository https://github.com/rainbowbismuth/gbcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rainbowbismuth/gbcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainbowbismuth%2Fgbcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainbowbismuth%2Fgbcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 205245f3d5f9ddaaf1e7e531211c216a3ea1700e
[INFO] testing rainbowbismuth/gbcc against 1.77.0 for beta-1.78-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainbowbismuth%2Fgbcc" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rainbowbismuth/gbcc on toolchain 1.77.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rainbowbismuth/gbcc
[INFO] finished tweaking git repo https://github.com/rainbowbismuth/gbcc
[INFO] tweaked toml for git repo https://github.com/rainbowbismuth/gbcc written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rainbowbismuth/gbcc 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" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5fbca1475434f4ff0340d43756ebdde7b8fe652655f2b99114d83a9351c2a71
[INFO] running `Command { std: "docker" "start" "-a" "a5fbca1475434f4ff0340d43756ebdde7b8fe652655f2b99114d83a9351c2a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5fbca1475434f4ff0340d43756ebdde7b8fe652655f2b99114d83a9351c2a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5fbca1475434f4ff0340d43756ebdde7b8fe652655f2b99114d83a9351c2a71", kill_on_drop: false }`
[INFO] [stdout] a5fbca1475434f4ff0340d43756ebdde7b8fe652655f2b99114d83a9351c2a71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 560618f52b9264de1a9193ae783f4ab2c0154b76e4441eb58dd76a55ec43428b
[INFO] running `Command { std: "docker" "start" "-a" "560618f52b9264de1a9193ae783f4ab2c0154b76e4441eb58dd76a55ec43428b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling gbcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fnv::FnvHashSet`
[INFO] [stdout]  --> src/dataflow/dominator.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fnv::FnvHashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AnalyzeInstructionBackward`, `BackwardAnalysis`, `RewriteExitBackward`, `RewriteInstructionBackward`, `backward_analysis`
[INFO] [stdout]   --> src/dataflow/mod.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  |     backward_analysis, AnalyzeInstructionBackward, BackwardAnalysis, RewriteExitBackward,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     RewriteInstructionBackward,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fact_base::FactBase`
[INFO] [stdout]   --> src/dataflow/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub use fact_base::FactBase;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AnalyzeInstruction`, `ForwardAnalysis`, `RewriteExit`, `RewriteInstruction`, `forward_analysis`
[INFO] [stdout]   --> src/dataflow/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     forward_analysis, AnalyzeInstruction, ForwardAnalysis, RewriteExit, RewriteInstruction,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BasicBlock`, `Entry`, `Exit`, `Graph`, `Instruction`, `Label`, `Language`
[INFO] [stdout]   --> src/dataflow/mod.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use graph::{BasicBlock, Entry, Exit, Graph, Instruction, Label, Language};
[INFO] [stdout]    |                 ^^^^^^^^^^  ^^^^^  ^^^^  ^^^^^  ^^^^^^^^^^^  ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lattice::Lattice`
[INFO] [stdout]   --> src/dataflow/mod.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub use lattice::Lattice;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/dataflow/dominator.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn join(&mut self, other: &Self, label: Label) -> bool {
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/dataflow/dominator.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         label: Label,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/dataflow/graph.rs:94:39
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn direct_predecessors(&self, label: Label) -> Vec<Label> {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AnalyzeInstructionBackward` is never constructed
[INFO] [stdout]  --> src/dataflow/backward_analysis.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct AnalyzeInstructionBackward<'a, F> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stdout]   --> src/dataflow/backward_analysis.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, F> AnalyzeInstructionBackward<'a, F> {
[INFO] [stdout]    | --------------------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn fact(&self) -> &F {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn replace<L: Language>(
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn replace_many<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn replace_with_graph<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AnalyzeExitBackward` is never constructed
[INFO] [stdout]   --> src/dataflow/backward_analysis.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct AnalyzeExitBackward<'a, F> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stdout]   --> src/dataflow/backward_analysis.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl<'a, F> AnalyzeExitBackward<'a, F> {
[INFO] [stdout]    | -------------------------------------- associated items in this implementation
[INFO] [stdout] 53 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn fact(&self) -> &F {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn replace<L: Language>(self, exit: L::Exit) -> RewriteExitBackward<L> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn replace_many<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn replace_with_graph<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Multiple`, and `Graph` are never constructed
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:92:5
[INFO] [stdout]     |
[INFO] [stdout] 90  | enum RewriteInstructionEnum<L: Language> {
[INFO] [stdout]     |      ---------------------- variants in this enum
[INFO] [stdout] 91  |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stdout] 92  |     Single(L::Instruction),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     Multiple(Vec<L::Instruction>),
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     Graph(L::Exit, Graph<L>, L::Entry),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RewriteInstructionEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Extend`, and `Graph` are never constructed
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 108 | enum RewriteExitEnum<L: Language> {
[INFO] [stdout]     |      --------------- variants in this enum
[INFO] [stdout] 109 |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stdout] 110 |     Single(L::Exit),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |     Extend(Vec<L::Instruction>, L::Exit),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     Graph(L::Exit, Graph<L>),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RewriteExitEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backward_analysis` is never used
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn backward_analysis<L, A, F>(analysis: &mut A, graph: &Graph<L>, entry: Label) -> FactBase<F>
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixed_point_backward_graph` is never used
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn fixed_point_backward_graph<L, A, F>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixed_point_backward_block` is never used
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:194:4
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn fixed_point_backward_block<L, A, F>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fact` is never read
[INFO] [stdout]  --> src/dataflow/forward_analysis.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct AnalyzeInstruction<'a, F> {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 8 |     fact: &'a mut F,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stdout]   --> src/dataflow/forward_analysis.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, F> AnalyzeInstruction<'a, F> {
[INFO] [stdout]    | ------------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn fact(&self) -> &F {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn replace<L: Language>(self, instruction: L::Instruction) -> RewriteInstruction<L> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn replace_many<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn replace_with_graph<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Multiple`, and `Graph` are never constructed
[INFO] [stdout]   --> src/dataflow/forward_analysis.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum RewriteInstructionEnum<L: Language> {
[INFO] [stdout]    |      ---------------------- variants in this enum
[INFO] [stdout] 50 |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stdout] 51 |     Single(L::Instruction),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     Multiple(Vec<L::Instruction>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     Graph(L::Exit, Graph<L>, L::Entry),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RewriteInstructionEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Extend`, and `Graph` are never constructed
[INFO] [stdout]   --> src/dataflow/forward_analysis.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub enum RewriteExit<L: Language, F> {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 68 |     Single(L::Exit),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     Extend(Vec<L::Instruction>, L::Exit),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     Graph(L::Exit, Graph<L>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `forward_analysis` is never used
[INFO] [stdout]    --> src/dataflow/forward_analysis.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn forward_analysis<L, A, F>(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixed_point_forward_graph` is never used
[INFO] [stdout]    --> src/dataflow/forward_analysis.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn fixed_point_forward_graph<L, A, F>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixed_point_forward_block` is never used
[INFO] [stdout]    --> src/dataflow/forward_analysis.rs:161:4
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn fixed_point_forward_block<L, A, F>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `label`, and `successors` are never used
[INFO] [stdout]   --> src/dataflow/graph.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl<L: Language> BasicBlock<L> {
[INFO] [stdout]    | ------------------------------- associated items in this implementation
[INFO] [stdout] 40 |     pub fn new(entry: L::Entry, code: Vec<L::Instruction>, exit: L::Exit) -> BasicBlock<L> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn label(&self) -> Label {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn successors(&self) -> Vec<Label> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_blocks`, `post_order_traversal`, `contains`, and `direct_predecessors` are never used
[INFO] [stdout]   --> src/dataflow/graph.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl<L: Language> Graph<L> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 59 |     pub fn from_blocks(blocks: Vec<BasicBlock<L>>) -> Graph<L> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn post_order_traversal(&self, entry: Label) -> Vec<Label> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn contains(&self, label: Label) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     pub fn direct_predecessors(&self, label: Label) -> Vec<Label> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "560618f52b9264de1a9193ae783f4ab2c0154b76e4441eb58dd76a55ec43428b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "560618f52b9264de1a9193ae783f4ab2c0154b76e4441eb58dd76a55ec43428b", kill_on_drop: false }`
[INFO] [stdout] 560618f52b9264de1a9193ae783f4ab2c0154b76e4441eb58dd76a55ec43428b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c9a683022b470f03db23f5772d6190321877c431bd35053e384d9a9d5bad0a7
[INFO] running `Command { std: "docker" "start" "-a" "6c9a683022b470f03db23f5772d6190321877c431bd35053e384d9a9d5bad0a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling gbcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fnv::FnvHashSet`
[INFO] [stdout]  --> src/dataflow/dominator.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fnv::FnvHashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AnalyzeInstructionBackward`, `BackwardAnalysis`, `RewriteExitBackward`, `RewriteInstructionBackward`, `backward_analysis`
[INFO] [stdout]   --> src/dataflow/mod.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  |     backward_analysis, AnalyzeInstructionBackward, BackwardAnalysis, RewriteExitBackward,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 10 |     RewriteInstructionBackward,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fact_base::FactBase`
[INFO] [stdout]   --> src/dataflow/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub use fact_base::FactBase;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/dataflow/dominator.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn join(&mut self, other: &Self, label: Label) -> bool {
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/dataflow/dominator.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         label: Label,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> src/dataflow/graph.rs:94:39
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn direct_predecessors(&self, label: Label) -> Vec<Label> {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]    --> src/main.rs:161:13
[INFO] [stdout]     |
[INFO] [stdout] 161 |             label: Label,
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]    --> src/main.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |             label: Label,
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AnalyzeInstructionBackward` is never constructed
[INFO] [stdout]  --> src/dataflow/backward_analysis.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct AnalyzeInstructionBackward<'a, F> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stdout]   --> src/dataflow/backward_analysis.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, F> AnalyzeInstructionBackward<'a, F> {
[INFO] [stdout]    | --------------------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn fact(&self) -> &F {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn replace<L: Language>(
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn replace_many<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn replace_with_graph<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AnalyzeExitBackward` is never constructed
[INFO] [stdout]   --> src/dataflow/backward_analysis.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct AnalyzeExitBackward<'a, F> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stdout]   --> src/dataflow/backward_analysis.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl<'a, F> AnalyzeExitBackward<'a, F> {
[INFO] [stdout]    | -------------------------------------- associated items in this implementation
[INFO] [stdout] 53 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn fact(&self) -> &F {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn replace<L: Language>(self, exit: L::Exit) -> RewriteExitBackward<L> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn replace_many<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn replace_with_graph<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Multiple`, and `Graph` are never constructed
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:92:5
[INFO] [stdout]     |
[INFO] [stdout] 90  | enum RewriteInstructionEnum<L: Language> {
[INFO] [stdout]     |      ---------------------- variants in this enum
[INFO] [stdout] 91  |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stdout] 92  |     Single(L::Instruction),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     Multiple(Vec<L::Instruction>),
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     Graph(L::Exit, Graph<L>, L::Entry),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RewriteInstructionEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Extend`, and `Graph` are never constructed
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 108 | enum RewriteExitEnum<L: Language> {
[INFO] [stdout]     |      --------------- variants in this enum
[INFO] [stdout] 109 |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stdout] 110 |     Single(L::Exit),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |     Extend(Vec<L::Instruction>, L::Exit),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     Graph(L::Exit, Graph<L>),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RewriteExitEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backward_analysis` is never used
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn backward_analysis<L, A, F>(analysis: &mut A, graph: &Graph<L>, entry: Label) -> FactBase<F>
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixed_point_backward_graph` is never used
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn fixed_point_backward_graph<L, A, F>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixed_point_backward_block` is never used
[INFO] [stdout]    --> src/dataflow/backward_analysis.rs:194:4
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn fixed_point_backward_block<L, A, F>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `replace_many` and `replace_with_graph` are never used
[INFO] [stdout]   --> src/dataflow/forward_analysis.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, F> AnalyzeInstruction<'a, F> {
[INFO] [stdout]    | ------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn replace_many<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn replace_with_graph<L: Language>(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Multiple` and `Graph` are never constructed
[INFO] [stdout]   --> src/dataflow/forward_analysis.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum RewriteInstructionEnum<L: Language> {
[INFO] [stdout]    |      ---------------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 54 |     Multiple(Vec<L::Instruction>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     Graph(L::Exit, Graph<L>, L::Entry),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RewriteInstructionEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Single`, `Extend`, and `Graph` are never constructed
[INFO] [stdout]   --> src/dataflow/forward_analysis.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub enum RewriteExit<L: Language, F> {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 68 |     Single(L::Exit),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     Extend(Vec<L::Instruction>, L::Exit),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     Graph(L::Exit, Graph<L>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `direct_predecessors` is never used
[INFO] [stdout]   --> src/dataflow/graph.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl<L: Language> Graph<L> {
[INFO] [stdout]    | -------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 94 |     pub fn direct_predecessors(&self, label: Label) -> Vec<Label> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add`, `And`, and `Or` are never constructed
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     enum Arith {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 18 |         Add,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 19 |         Sub,
[INFO] [stdout] 20 |         And,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 21 |         Or,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Arith` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Neq`, `Lt`, and `Lte` are never constructed
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     enum Cond {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 26 |         Eq,
[INFO] [stdout] 27 |         Neq,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 28 |         Lt,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 29 |         Lte,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cond` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "6c9a683022b470f03db23f5772d6190321877c431bd35053e384d9a9d5bad0a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c9a683022b470f03db23f5772d6190321877c431bd35053e384d9a9d5bad0a7", kill_on_drop: false }`
[INFO] [stdout] 6c9a683022b470f03db23f5772d6190321877c431bd35053e384d9a9d5bad0a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 15d135a03e5cd09c9729461f9591851d2c8cc5892df4480cc265d1ece27be44f
[INFO] running `Command { std: "docker" "start" "-a" "15d135a03e5cd09c9729461f9591851d2c8cc5892df4480cc265d1ece27be44f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `fnv::FnvHashSet`
[INFO] [stderr]  --> src/dataflow/dominator.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use fnv::FnvHashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AnalyzeInstructionBackward`, `BackwardAnalysis`, `RewriteExitBackward`, `RewriteInstructionBackward`, `backward_analysis`
[INFO] [stderr]   --> src/dataflow/mod.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr] 9  |     backward_analysis, AnalyzeInstructionBackward, BackwardAnalysis, RewriteExitBackward,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 10 |     RewriteInstructionBackward,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `fact_base::FactBase`
[INFO] [stderr]   --> src/dataflow/mod.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub use fact_base::FactBase;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]   --> src/dataflow/dominator.rs:17:38
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn join(&mut self, other: &Self, label: Label) -> bool {
[INFO] [stderr]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]   --> src/dataflow/dominator.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         label: Label,
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]   --> src/dataflow/graph.rs:94:39
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn direct_predecessors(&self, label: Label) -> Vec<Label> {
[INFO] [stderr]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/main.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |             label: Label,
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `label`
[INFO] [stderr]    --> src/main.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             label: Label,
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `AnalyzeInstructionBackward` is never constructed
[INFO] [stderr]  --> src/dataflow/backward_analysis.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct AnalyzeInstructionBackward<'a, F> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stderr]   --> src/dataflow/backward_analysis.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<'a, F> AnalyzeInstructionBackward<'a, F> {
[INFO] [stderr]    | --------------------------------------------- associated items in this implementation
[INFO] [stderr] 12 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 16 |     pub fn fact(&self) -> &F {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 24 |     pub fn replace<L: Language>(
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 31 |     pub fn replace_many<L: Language>(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 38 |     pub fn replace_with_graph<L: Language>(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `AnalyzeExitBackward` is never constructed
[INFO] [stderr]   --> src/dataflow/backward_analysis.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub struct AnalyzeExitBackward<'a, F> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `fact`, `fact_mut`, `replace`, `replace_many`, and `replace_with_graph` are never used
[INFO] [stderr]   --> src/dataflow/backward_analysis.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 52 | impl<'a, F> AnalyzeExitBackward<'a, F> {
[INFO] [stderr]    | -------------------------------------- associated items in this implementation
[INFO] [stderr] 53 |     fn new(fact: &'a mut F) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 57 |     pub fn fact(&self) -> &F {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 61 |     pub fn fact_mut(self) -> &'a mut F {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |     pub fn replace<L: Language>(self, exit: L::Exit) -> RewriteExitBackward<L> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |     pub fn replace_many<L: Language>(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |     pub fn replace_with_graph<L: Language>(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Single`, `Multiple`, and `Graph` are never constructed
[INFO] [stderr]    --> src/dataflow/backward_analysis.rs:92:5
[INFO] [stderr]     |
[INFO] [stderr] 90  | enum RewriteInstructionEnum<L: Language> {
[INFO] [stderr]     |      ---------------------- variants in this enum
[INFO] [stderr] 91  |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stderr] 92  |     Single(L::Instruction),
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 95  |     Multiple(Vec<L::Instruction>),
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |     Graph(L::Exit, Graph<L>, L::Entry),
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `RewriteInstructionEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Single`, `Extend`, and `Graph` are never constructed
[INFO] [stderr]    --> src/dataflow/backward_analysis.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 108 | enum RewriteExitEnum<L: Language> {
[INFO] [stderr]     |      --------------- variants in this enum
[INFO] [stderr] 109 |     // Replace the currently analyzed instruction with this single, new instruction.
[INFO] [stderr] 110 |     Single(L::Exit),
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |     Extend(Vec<L::Instruction>, L::Exit),
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 118 |     Graph(L::Exit, Graph<L>),
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `RewriteExitEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `backward_analysis` is never used
[INFO] [stderr]    --> src/dataflow/backward_analysis.rs:147:8
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn backward_analysis<L, A, F>(analysis: &mut A, graph: &Graph<L>, entry: Label) -> FactBase<F>
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `fixed_point_backward_graph` is never used
[INFO] [stderr]    --> src/dataflow/backward_analysis.rs:158:4
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn fixed_point_backward_graph<L, A, F>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `fixed_point_backward_block` is never used
[INFO] [stderr]    --> src/dataflow/backward_analysis.rs:194:4
[INFO] [stderr]     |
[INFO] [stderr] 194 | fn fixed_point_backward_block<L, A, F>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `replace_many` and `replace_with_graph` are never used
[INFO] [stderr]   --> src/dataflow/forward_analysis.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<'a, F> AnalyzeInstruction<'a, F> {
[INFO] [stderr]    | ------------------------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 28 |     pub fn replace_many<L: Language>(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 35 |     pub fn replace_with_graph<L: Language>(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Multiple` and `Graph` are never constructed
[INFO] [stderr]   --> src/dataflow/forward_analysis.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 49 | enum RewriteInstructionEnum<L: Language> {
[INFO] [stderr]    |      ---------------------- variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 54 |     Multiple(Vec<L::Instruction>),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 60 |     Graph(L::Exit, Graph<L>, L::Entry),
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RewriteInstructionEnum` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Single`, `Extend`, and `Graph` are never constructed
[INFO] [stderr]   --> src/dataflow/forward_analysis.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub enum RewriteExit<L: Language, F> {
[INFO] [stderr]    |          ----------- variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 68 |     Single(L::Exit),
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 71 |     Extend(Vec<L::Instruction>, L::Exit),
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 |     Graph(L::Exit, Graph<L>),
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `direct_predecessors` is never used
[INFO] [stderr]   --> src/dataflow/graph.rs:94:12
[INFO] [stderr]    |
[INFO] [stderr] 58 | impl<L: Language> Graph<L> {
[INFO] [stderr]    | -------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 94 |     pub fn direct_predecessors(&self, label: Label) -> Vec<Label> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Add`, `And`, and `Or` are never constructed
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     enum Arith {
[INFO] [stderr]    |          ----- variants in this enum
[INFO] [stderr] 18 |         Add,
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 19 |         Sub,
[INFO] [stderr] 20 |         And,
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 21 |         Or,
[INFO] [stderr]    |         ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Arith` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Neq`, `Lt`, and `Lte` are never constructed
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     enum Cond {
[INFO] [stderr]    |          ---- variants in this enum
[INFO] [stderr] 26 |         Eq,
[INFO] [stderr] 27 |         Neq,
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 28 |         Lt,
[INFO] [stderr]    |         ^^
[INFO] [stderr] 29 |         Lte,
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Cond` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `gbcc` (bin "gbcc" test) generated 23 warnings (run `cargo fix --bin "gbcc" --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/gbcc-932ed6735cb8a085)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::constant_test ... ok
[INFO] [stdout] test test::dominator_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "15d135a03e5cd09c9729461f9591851d2c8cc5892df4480cc265d1ece27be44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15d135a03e5cd09c9729461f9591851d2c8cc5892df4480cc265d1ece27be44f", kill_on_drop: false }`
[INFO] [stdout] 15d135a03e5cd09c9729461f9591851d2c8cc5892df4480cc265d1ece27be44f