Dec 17 23:26:23.260 INFO checking hansihe/beam_code against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 23:26:23.260 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/hansihe/beam_code:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 23:26:23.812 INFO [stdout] 9b98f3dc033cdc788ea2285763cb4621379c45cf4a997ee25d26b7e70db23a31
Dec 17 23:26:23.815 INFO running `"docker" "start" "-a" "9b98f3dc033cdc788ea2285763cb4621379c45cf4a997ee25d26b7e70db23a31"`
Dec 17 23:26:25.479 INFO [stderr]     Checking libflate v0.1.9
Dec 17 23:26:25.479 INFO [stderr]     Checking itertools v0.6.0
Dec 17 23:26:25.479 INFO [stderr]     Checking string-intern v0.1.6
Dec 17 23:26:25.479 INFO [stderr]     Checking num-bigint v0.1.39
Dec 17 23:26:28.136 INFO [stderr]     Checking num-rational v0.1.38
Dec 17 23:26:29.059 INFO [stderr]     Checking num v0.1.39
Dec 17 23:26:29.184 INFO [stderr]     Checking beam_file v0.2.2
Dec 17 23:26:29.520 INFO [stderr]     Checking eetf v0.3.6
Dec 17 23:26:31.204 INFO [stderr]     Checking beam_code v0.1.0 (/opt/crater/workdir)
Dec 17 23:26:31.728 INFO [stderr] warning: unused import: `::std::rc::Rc`
Dec 17 23:26:31.728 INFO [stderr]  --> src/op.rs:6:5
Dec 17 23:26:31.728 INFO [stderr]   |
Dec 17 23:26:31.728 INFO [stderr] 6 | use ::std::rc::Rc;
Dec 17 23:26:31.728 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 17 23:26:31.728 INFO [stderr]   |
Dec 17 23:26:31.728 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:26:31.728 INFO [stderr] 
Dec 17 23:26:31.728 INFO [stderr] warning: unused import: `Literal`
Dec 17 23:26:31.728 INFO [stderr]  --> src/ssa/mod.rs:5:52
Dec 17 23:26:31.728 INFO [stderr]   |
Dec 17 23:26:31.728 INFO [stderr] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
Dec 17 23:26:31.728 INFO [stderr]   |                                                    ^^^^^^^
Dec 17 23:26:31.728 INFO [stderr] 
Dec 17 23:26:31.728 INFO [stderr] warning: unused import: `::std::hash::Hash`
Dec 17 23:26:31.728 INFO [stderr]  --> src/ssa/representation.rs:5:5
Dec 17 23:26:31.728 INFO [stderr]   |
Dec 17 23:26:31.728 INFO [stderr] 5 | use ::std::hash::Hash;
Dec 17 23:26:31.728 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:31.728 INFO [stderr] 
Dec 17 23:26:31.732 INFO [stderr] warning: unused import: `::std::fmt::Debug`
Dec 17 23:26:31.732 INFO [stderr]  --> src/graph/dfs.rs:2:5
Dec 17 23:26:31.732 INFO [stderr]   |
Dec 17 23:26:31.732 INFO [stderr] 2 | use ::std::fmt::Debug;
Dec 17 23:26:31.732 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:31.732 INFO [stderr] 
Dec 17 23:26:31.732 INFO [stderr] warning: unused import: `GraphAccessor`
Dec 17 23:26:31.732 INFO [stderr]  --> src/graph/dfs.rs:5:14
Dec 17 23:26:31.732 INFO [stderr]   |
Dec 17 23:26:31.732 INFO [stderr] 5 | use super::{ GraphAccessor, GraphDfs };
Dec 17 23:26:31.732 INFO [stderr]   |              ^^^^^^^^^^^^^
Dec 17 23:26:31.732 INFO [stderr] 
Dec 17 23:26:31.836 INFO [stderr] warning: unused import: `::std::rc::Rc`
Dec 17 23:26:31.836 INFO [stderr]  --> src/op.rs:6:5
Dec 17 23:26:31.836 INFO [stderr]   |
Dec 17 23:26:31.836 INFO [stderr] 6 | use ::std::rc::Rc;
Dec 17 23:26:31.836 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 17 23:26:31.836 INFO [stderr]   |
Dec 17 23:26:31.836 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:26:31.836 INFO [stderr] 
Dec 17 23:26:31.847 INFO [stderr] warning: unused import: `Literal`
Dec 17 23:26:31.847 INFO [stderr]  --> src/ssa/mod.rs:5:52
Dec 17 23:26:31.847 INFO [stderr]   |
Dec 17 23:26:31.847 INFO [stderr] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
Dec 17 23:26:31.847 INFO [stderr]   |                                                    ^^^^^^^
Dec 17 23:26:31.847 INFO [stderr] 
Dec 17 23:26:31.847 INFO [stderr] warning: unused import: `::std::hash::Hash`
Dec 17 23:26:31.847 INFO [stderr]  --> src/ssa/representation.rs:5:5
Dec 17 23:26:31.847 INFO [stderr]   |
Dec 17 23:26:31.847 INFO [stderr] 5 | use ::std::hash::Hash;
Dec 17 23:26:31.847 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:31.847 INFO [stderr] 
Dec 17 23:26:31.847 INFO [stderr] warning: unused import: `::std::fmt::Debug`
Dec 17 23:26:31.847 INFO [stderr]  --> src/graph/dfs.rs:2:5
Dec 17 23:26:31.847 INFO [stderr]   |
Dec 17 23:26:31.847 INFO [stderr] 2 | use ::std::fmt::Debug;
Dec 17 23:26:31.847 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:31.847 INFO [stderr] 
Dec 17 23:26:31.847 INFO [stderr] warning: unused import: `GraphAccessor`
Dec 17 23:26:31.847 INFO [stderr]  --> src/graph/dfs.rs:5:14
Dec 17 23:26:31.847 INFO [stderr]   |
Dec 17 23:26:31.847 INFO [stderr] 5 | use super::{ GraphAccessor, GraphDfs };
Dec 17 23:26:31.847 INFO [stderr]   |              ^^^^^^^^^^^^^
Dec 17 23:26:31.847 INFO [stderr] 
Dec 17 23:26:32.422 INFO [stderr] warning: unused variable: `atom_num`
Dec 17 23:26:32.422 INFO [stderr]    --> src/beam_module.rs:218:9
Dec 17 23:26:32.422 INFO [stderr]     |
Dec 17 23:26:32.422 INFO [stderr] 218 |     for atom_num in 0..len {
Dec 17 23:26:32.422 INFO [stderr]     |         ^^^^^^^^ help: consider using `_atom_num` instead
Dec 17 23:26:32.422 INFO [stderr]     |
Dec 17 23:26:32.422 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 23:26:32.422 INFO [stderr] 
Dec 17 23:26:32.531 INFO [stderr] warning: unused variable: `atom_num`
Dec 17 23:26:32.531 INFO [stderr]    --> src/beam_module.rs:218:9
Dec 17 23:26:32.531 INFO [stderr]     |
Dec 17 23:26:32.531 INFO [stderr] 218 |     for atom_num in 0..len {
Dec 17 23:26:32.531 INFO [stderr]     |         ^^^^^^^^ help: consider using `_atom_num` instead
Dec 17 23:26:32.531 INFO [stderr]     |
Dec 17 23:26:32.531 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 23:26:32.531 INFO [stderr] 
Dec 17 23:26:32.836 INFO [stderr] warning: method is never used: `x_reg`
Dec 17 23:26:32.837 INFO [stderr]    --> src/op.rs:687:5
Dec 17 23:26:32.837 INFO [stderr]     |
Dec 17 23:26:32.837 INFO [stderr] 687 |     fn x_reg(num: u32) -> Source {
Dec 17 23:26:32.837 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:32.837 INFO [stderr]     |
Dec 17 23:26:32.837 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 23:26:32.837 INFO [stderr] 
Dec 17 23:26:32.837 INFO [stderr] warning: type alias is never used: `GraphAccessor`
Dec 17 23:26:32.837 INFO [stderr]   --> src/graph/mod.rs:14:1
Dec 17 23:26:32.837 INFO [stderr]    |
Dec 17 23:26:32.837 INFO [stderr] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
Dec 17 23:26:32.837 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:32.837 INFO [stderr] 
Dec 17 23:26:32.939 INFO [stderr] warning: method is never used: `x_reg`
Dec 17 23:26:32.939 INFO [stderr]    --> src/op.rs:687:5
Dec 17 23:26:32.939 INFO [stderr]     |
Dec 17 23:26:32.939 INFO [stderr] 687 |     fn x_reg(num: u32) -> Source {
Dec 17 23:26:32.939 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:32.939 INFO [stderr]     |
Dec 17 23:26:32.939 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 23:26:32.939 INFO [stderr] 
Dec 17 23:26:32.940 INFO [stderr] warning: type alias is never used: `GraphAccessor`
Dec 17 23:26:32.940 INFO [stderr]   --> src/graph/mod.rs:14:1
Dec 17 23:26:32.940 INFO [stderr]    |
Dec 17 23:26:32.940 INFO [stderr] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
Dec 17 23:26:32.940 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:32.940 INFO [stderr] 
Dec 17 23:26:33.396 INFO [stderr] warning: unused import: `::std::rc::Rc`
Dec 17 23:26:33.396 INFO [stderr]  --> src/op.rs:6:5
Dec 17 23:26:33.396 INFO [stderr]   |
Dec 17 23:26:33.396 INFO [stderr] 6 | use ::std::rc::Rc;
Dec 17 23:26:33.396 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 17 23:26:33.396 INFO [stderr]   |
Dec 17 23:26:33.396 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:26:33.396 INFO [stderr] 
Dec 17 23:26:33.404 INFO [stderr] warning: unused import: `Literal`
Dec 17 23:26:33.404 INFO [stderr]  --> src/ssa/mod.rs:5:52
Dec 17 23:26:33.404 INFO [stderr]   |
Dec 17 23:26:33.404 INFO [stderr] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
Dec 17 23:26:33.404 INFO [stderr]   |                                                    ^^^^^^^
Dec 17 23:26:33.404 INFO [stderr] 
Dec 17 23:26:33.416 INFO [stderr] warning: unused import: `::std::hash::Hash`
Dec 17 23:26:33.416 INFO [stderr]  --> src/ssa/representation.rs:5:5
Dec 17 23:26:33.416 INFO [stderr]   |
Dec 17 23:26:33.416 INFO [stderr] 5 | use ::std::hash::Hash;
Dec 17 23:26:33.416 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:33.416 INFO [stderr] 
Dec 17 23:26:33.416 INFO [stderr] warning: unused import: `::std::fmt::Debug`
Dec 17 23:26:33.416 INFO [stderr]  --> src/graph/dfs.rs:2:5
Dec 17 23:26:33.416 INFO [stderr]   |
Dec 17 23:26:33.416 INFO [stderr] 2 | use ::std::fmt::Debug;
Dec 17 23:26:33.416 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:33.416 INFO [stderr] 
Dec 17 23:26:33.416 INFO [stderr] warning: unused import: `GraphAccessor`
Dec 17 23:26:33.416 INFO [stderr]  --> src/graph/dfs.rs:5:14
Dec 17 23:26:33.416 INFO [stderr]   |
Dec 17 23:26:33.416 INFO [stderr] 5 | use super::{ GraphAccessor, GraphDfs };
Dec 17 23:26:33.416 INFO [stderr]   |              ^^^^^^^^^^^^^
Dec 17 23:26:33.416 INFO [stderr] 
Dec 17 23:26:33.424 INFO [stderr] warning: unused import: `::std::rc::Rc`
Dec 17 23:26:33.424 INFO [stderr]  --> src/op.rs:6:5
Dec 17 23:26:33.424 INFO [stderr]   |
Dec 17 23:26:33.424 INFO [stderr] 6 | use ::std::rc::Rc;
Dec 17 23:26:33.424 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 17 23:26:33.424 INFO [stderr]   |
Dec 17 23:26:33.424 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:26:33.424 INFO [stderr] 
Dec 17 23:26:33.428 INFO [stderr] warning: unused import: `Literal`
Dec 17 23:26:33.428 INFO [stderr]  --> src/ssa/mod.rs:5:52
Dec 17 23:26:33.428 INFO [stderr]   |
Dec 17 23:26:33.428 INFO [stderr] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
Dec 17 23:26:33.428 INFO [stderr]   |                                                    ^^^^^^^
Dec 17 23:26:33.428 INFO [stderr] 
Dec 17 23:26:33.428 INFO [stderr] warning: unused import: `::std::hash::Hash`
Dec 17 23:26:33.428 INFO [stderr]  --> src/ssa/representation.rs:5:5
Dec 17 23:26:33.428 INFO [stderr]   |
Dec 17 23:26:33.428 INFO [stderr] 5 | use ::std::hash::Hash;
Dec 17 23:26:33.428 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:33.428 INFO [stderr] 
Dec 17 23:26:33.432 INFO [stderr] warning: unused import: `::std::fmt::Debug`
Dec 17 23:26:33.432 INFO [stderr]  --> src/graph/dfs.rs:2:5
Dec 17 23:26:33.432 INFO [stderr]   |
Dec 17 23:26:33.432 INFO [stderr] 2 | use ::std::fmt::Debug;
Dec 17 23:26:33.432 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 23:26:33.432 INFO [stderr] 
Dec 17 23:26:33.432 INFO [stderr] warning: unused import: `GraphAccessor`
Dec 17 23:26:33.432 INFO [stderr]  --> src/graph/dfs.rs:5:14
Dec 17 23:26:33.432 INFO [stderr]   |
Dec 17 23:26:33.432 INFO [stderr] 5 | use super::{ GraphAccessor, GraphDfs };
Dec 17 23:26:33.432 INFO [stderr]   |              ^^^^^^^^^^^^^
Dec 17 23:26:33.432 INFO [stderr] 
Dec 17 23:26:34.288 INFO [stderr] warning: unused variable: `atom_num`
Dec 17 23:26:34.288 INFO [stderr]    --> src/beam_module.rs:218:9
Dec 17 23:26:34.288 INFO [stderr]     |
Dec 17 23:26:34.288 INFO [stderr] 218 |     for atom_num in 0..len {
Dec 17 23:26:34.288 INFO [stderr]     |         ^^^^^^^^ help: consider using `_atom_num` instead
Dec 17 23:26:34.288 INFO [stderr]     |
Dec 17 23:26:34.288 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 23:26:34.288 INFO [stderr] 
Dec 17 23:26:34.306 INFO [stderr] warning: unused variable: `atom_num`
Dec 17 23:26:34.306 INFO [stderr]    --> src/beam_module.rs:218:9
Dec 17 23:26:34.306 INFO [stderr]     |
Dec 17 23:26:34.306 INFO [stderr] 218 |     for atom_num in 0..len {
Dec 17 23:26:34.306 INFO [stderr]     |         ^^^^^^^^ help: consider using `_atom_num` instead
Dec 17 23:26:34.306 INFO [stderr]     |
Dec 17 23:26:34.306 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 23:26:34.306 INFO [stderr] 
Dec 17 23:26:34.713 INFO [stderr] warning: method is never used: `with_reads_labels`
Dec 17 23:26:34.713 INFO [stderr]   --> src/op.rs:32:5
Dec 17 23:26:34.714 INFO [stderr]    |
Dec 17 23:26:34.714 INFO [stderr] 32 |     pub fn with_reads_labels(kind: OpKind, reads: Vec<Source>, labels: Vec<LabelId>) -> Self {
Dec 17 23:26:34.714 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.714 INFO [stderr]    |
Dec 17 23:26:34.714 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 23:26:34.714 INFO [stderr] 
Dec 17 23:26:34.714 INFO [stderr] warning: variant is never constructed: `CaseEnd`
Dec 17 23:26:34.714 INFO [stderr]    --> src/op.rs:156:5
Dec 17 23:26:34.714 INFO [stderr]     |
Dec 17 23:26:34.714 INFO [stderr] 156 |     CaseEnd,
Dec 17 23:26:34.714 INFO [stderr]     |     ^^^^^^^
Dec 17 23:26:34.714 INFO [stderr] 
Dec 17 23:26:34.714 INFO [stderr] warning: method is never used: `x_reg`
Dec 17 23:26:34.714 INFO [stderr]    --> src/op.rs:687:5
Dec 17 23:26:34.714 INFO [stderr]     |
Dec 17 23:26:34.714 INFO [stderr] 687 |     fn x_reg(num: u32) -> Source {
Dec 17 23:26:34.714 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.714 INFO [stderr] 
Dec 17 23:26:34.714 INFO [stderr] warning: method is never used: `get_register`
Dec 17 23:26:34.714 INFO [stderr]    --> src/op.rs:691:5
Dec 17 23:26:34.714 INFO [stderr]     |
Dec 17 23:26:34.719 INFO [stderr] 691 |     pub fn get_register(&self) -> Register {
Dec 17 23:26:34.719 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.719 INFO [stderr] 
Dec 17 23:26:34.719 INFO [stderr] warning: method is never used: `get_register`
Dec 17 23:26:34.719 INFO [stderr]   --> src/ssa/representation.rs:63:5
Dec 17 23:26:34.719 INFO [stderr]    |
Dec 17 23:26:34.719 INFO [stderr] 63 |     pub fn get_register(&self) -> SSARegister {
Dec 17 23:26:34.719 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.719 INFO [stderr] 
Dec 17 23:26:34.719 INFO [stderr] warning: type alias is never used: `GraphAccessor`
Dec 17 23:26:34.719 INFO [stderr]   --> src/graph/mod.rs:14:1
Dec 17 23:26:34.719 INFO [stderr]    |
Dec 17 23:26:34.719 INFO [stderr] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
Dec 17 23:26:34.719 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.720 INFO [stderr] 
Dec 17 23:26:34.736 INFO [stderr] warning: method is never used: `with_reads_labels`
Dec 17 23:26:34.736 INFO [stderr]   --> src/op.rs:32:5
Dec 17 23:26:34.736 INFO [stderr]    |
Dec 17 23:26:34.736 INFO [stderr] 32 |     pub fn with_reads_labels(kind: OpKind, reads: Vec<Source>, labels: Vec<LabelId>) -> Self {
Dec 17 23:26:34.736 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.736 INFO [stderr]    |
Dec 17 23:26:34.736 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 23:26:34.736 INFO [stderr] 
Dec 17 23:26:34.737 INFO [stderr] warning: variant is never constructed: `CaseEnd`
Dec 17 23:26:34.737 INFO [stderr]    --> src/op.rs:156:5
Dec 17 23:26:34.737 INFO [stderr]     |
Dec 17 23:26:34.738 INFO [stderr] 156 |     CaseEnd,
Dec 17 23:26:34.738 INFO [stderr]     |     ^^^^^^^
Dec 17 23:26:34.738 INFO [stderr] 
Dec 17 23:26:34.739 INFO [stderr] warning: method is never used: `x_reg`
Dec 17 23:26:34.739 INFO [stderr]    --> src/op.rs:687:5
Dec 17 23:26:34.739 INFO [stderr]     |
Dec 17 23:26:34.739 INFO [stderr] 687 |     fn x_reg(num: u32) -> Source {
Dec 17 23:26:34.739 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.740 INFO [stderr] 
Dec 17 23:26:34.740 INFO [stderr] warning: method is never used: `get_register`
Dec 17 23:26:34.740 INFO [stderr]    --> src/op.rs:691:5
Dec 17 23:26:34.740 INFO [stderr]     |
Dec 17 23:26:34.740 INFO [stderr] 691 |     pub fn get_register(&self) -> Register {
Dec 17 23:26:34.740 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.740 INFO [stderr] 
Dec 17 23:26:34.741 INFO [stderr] warning: method is never used: `get_register`
Dec 17 23:26:34.741 INFO [stderr]   --> src/ssa/representation.rs:63:5
Dec 17 23:26:34.742 INFO [stderr]    |
Dec 17 23:26:34.742 INFO [stderr] 63 |     pub fn get_register(&self) -> SSARegister {
Dec 17 23:26:34.742 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.742 INFO [stderr] 
Dec 17 23:26:34.743 INFO [stderr] warning: type alias is never used: `GraphAccessor`
Dec 17 23:26:34.743 INFO [stderr]   --> src/graph/mod.rs:14:1
Dec 17 23:26:34.752 INFO [stderr]    |
Dec 17 23:26:34.752 INFO [stderr] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
Dec 17 23:26:34.752 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 23:26:34.752 INFO [stderr] 
Dec 17 23:26:34.803 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.41s
Dec 17 23:26:35.186 INFO running `"docker" "inspect" "9b98f3dc033cdc788ea2285763cb4621379c45cf4a997ee25d26b7e70db23a31"`
Dec 17 23:26:35.288 INFO running `"docker" "rm" "-f" "9b98f3dc033cdc788ea2285763cb4621379c45cf4a997ee25d26b7e70db23a31"`
Dec 17 23:26:35.409 INFO [stdout] 9b98f3dc033cdc788ea2285763cb4621379c45cf4a997ee25d26b7e70db23a31