Dec 19 13:47:57.348 INFO checking lbcdec/lbcdec against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:47:57.348 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/lbcdec/lbcdec:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 13:47:57.535 INFO [stdout] 579958d23730a64a7c13b34793c9bd6c0233f3559d3395b5bc5fd36be3d37bba
Dec 19 13:47:57.538 INFO running `"docker" "start" "-a" "579958d23730a64a7c13b34793c9bd6c0233f3559d3395b5bc5fd36be3d37bba"`
Dec 19 13:47:58.456 INFO [stderr]     Checking obstack v0.1.3
Dec 19 13:47:58.464 INFO [stderr]     Checking memchr v1.0.2
Dec 19 13:47:58.464 INFO [stderr]     Checking rand v0.5.4
Dec 19 13:47:58.464 INFO [stderr]     Checking clap v2.32.0
Dec 19 13:47:58.464 INFO [stderr]     Checking rayon-core v1.4.1
Dec 19 13:47:59.056 INFO [stderr]     Checking nom v3.2.1
Dec 19 13:47:59.724 INFO [stderr]     Checking rayon v1.0.2
Dec 19 13:48:02.624 INFO [stderr]     Checking tempfile v3.0.3
Dec 19 13:48:06.988 INFO [stderr]     Checking lbcdec v0.1.0 (/opt/crater/workdir)
Dec 19 13:48:07.936 INFO [stderr] warning: unused import: `obstack`
Dec 19 13:48:07.936 INFO [stderr]  --> src/ast/mod.rs:6:5
Dec 19 13:48:07.936 INFO [stderr]   |
Dec 19 13:48:07.936 INFO [stderr] 6 | use obstack;
Dec 19 13:48:07.936 INFO [stderr]   |     ^^^^^^^
Dec 19 13:48:07.936 INFO [stderr]   |
Dec 19 13:48:07.936 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:48:07.936 INFO [stderr] 
Dec 19 13:48:07.961 INFO [stderr] warning: unused import: `obstack`
Dec 19 13:48:07.961 INFO [stderr]  --> src/ast/mod.rs:6:5
Dec 19 13:48:07.961 INFO [stderr]   |
Dec 19 13:48:07.961 INFO [stderr] 6 | use obstack;
Dec 19 13:48:07.961 INFO [stderr]   |     ^^^^^^^
Dec 19 13:48:07.961 INFO [stderr]   |
Dec 19 13:48:07.961 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:48:07.961 INFO [stderr] 
Dec 19 13:48:09.680 INFO [stderr] warning: private type `ast::Block<'ctx>` in public interface (error E0446)
Dec 19 13:48:09.680 INFO [stderr]   --> src/ast/mod.rs:65:10
Dec 19 13:48:09.680 INFO [stderr]    |
Dec 19 13:48:09.680 INFO [stderr] 65 |     Do { block: Block<'ctx> }
Dec 19 13:48:09.680 INFO [stderr]    |          ^^^^^^^^^^^^^^^^^^
Dec 19 13:48:09.680 INFO [stderr]    |
Dec 19 13:48:09.680 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 19 13:48:09.680 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 13:48:09.680 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 19 13:48:09.680 INFO [stderr] 
Dec 19 13:48:09.696 INFO [stderr] warning: unreachable pattern
Dec 19 13:48:09.696 INFO [stderr]     --> src/view_context/mod.rs:1408:29
Dec 19 13:48:09.696 INFO [stderr]      |
Dec 19 13:48:09.696 INFO [stderr] 1408 |                 ref instr @ _ => panic!("Unimplemented instruction: {:?}", instr),
Dec 19 13:48:09.696 INFO [stderr]      |                             ^
Dec 19 13:48:09.696 INFO [stderr]      |
Dec 19 13:48:09.704 INFO [stderr]      = note: #[warn(unreachable_patterns)] on by default
Dec 19 13:48:09.705 INFO [stderr] 
Dec 19 13:48:10.072 INFO [stderr] warning: private type `ast::Block<'ctx>` in public interface (error E0446)
Dec 19 13:48:10.072 INFO [stderr]   --> src/ast/mod.rs:65:10
Dec 19 13:48:10.072 INFO [stderr]    |
Dec 19 13:48:10.072 INFO [stderr] 65 |     Do { block: Block<'ctx> }
Dec 19 13:48:10.072 INFO [stderr]    |          ^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.072 INFO [stderr]    |
Dec 19 13:48:10.072 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 19 13:48:10.072 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 13:48:10.072 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 19 13:48:10.072 INFO [stderr] 
Dec 19 13:48:10.100 INFO [stderr] warning: unreachable pattern
Dec 19 13:48:10.100 INFO [stderr]     --> src/view_context/mod.rs:1408:29
Dec 19 13:48:10.100 INFO [stderr]      |
Dec 19 13:48:10.100 INFO [stderr] 1408 |                 ref instr @ _ => panic!("Unimplemented instruction: {:?}", instr),
Dec 19 13:48:10.100 INFO [stderr]      |                             ^
Dec 19 13:48:10.100 INFO [stderr]      |
Dec 19 13:48:10.100 INFO [stderr]      = note: #[warn(unreachable_patterns)] on by default
Dec 19 13:48:10.100 INFO [stderr] 
Dec 19 13:48:10.524 INFO [stderr] warning: struct is never constructed: `ASTContext`
Dec 19 13:48:10.524 INFO [stderr]  --> src/ast/mod.rs:9:1
Dec 19 13:48:10.524 INFO [stderr]   |
Dec 19 13:48:10.524 INFO [stderr] 9 | struct ASTContext {
Dec 19 13:48:10.524 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.525 INFO [stderr]   |
Dec 19 13:48:10.525 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 13:48:10.525 INFO [stderr] 
Dec 19 13:48:10.525 INFO [stderr] warning: struct is never constructed: `Scope`
Dec 19 13:48:10.525 INFO [stderr]   --> src/ast/mod.rs:16:1
Dec 19 13:48:10.525 INFO [stderr]    |
Dec 19 13:48:10.525 INFO [stderr] 16 | struct Scope<'parent, 'ctx: 'parent> {
Dec 19 13:48:10.525 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.525 INFO [stderr] 
Dec 19 13:48:10.525 INFO [stderr] warning: struct is never constructed: `Block`
Dec 19 13:48:10.525 INFO [stderr]   --> src/ast/mod.rs:23:1
Dec 19 13:48:10.525 INFO [stderr]    |
Dec 19 13:48:10.525 INFO [stderr] 23 | struct Block<'ctx> {
Dec 19 13:48:10.525 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.525 INFO [stderr] 
Dec 19 13:48:10.525 INFO [stderr] warning: struct is never constructed: `Node`
Dec 19 13:48:10.525 INFO [stderr]   --> src/ast/mod.rs:30:1
Dec 19 13:48:10.525 INFO [stderr]    |
Dec 19 13:48:10.525 INFO [stderr] 30 | struct Node<T: Sized> {
Dec 19 13:48:10.525 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.525 INFO [stderr] 
Dec 19 13:48:10.525 INFO [stderr] warning: struct is never constructed: `StatementNode`
Dec 19 13:48:10.525 INFO [stderr]   --> src/ast/mod.rs:37:1
Dec 19 13:48:10.525 INFO [stderr]    |
Dec 19 13:48:10.525 INFO [stderr] 37 | struct StatementNode<'ctx, T: Sized> {
Dec 19 13:48:10.525 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.525 INFO [stderr] 
Dec 19 13:48:10.526 INFO [stderr] warning: struct is never constructed: `StatLocalDecl`
Dec 19 13:48:10.526 INFO [stderr]   --> src/ast/mod.rs:49:1
Dec 19 13:48:10.526 INFO [stderr]    |
Dec 19 13:48:10.526 INFO [stderr] 49 | pub struct StatLocalDecl { // <'ctx> {
Dec 19 13:48:10.526 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.526 INFO [stderr] 
Dec 19 13:48:10.526 INFO [stderr] warning: enum is never used: `Statement`
Dec 19 13:48:10.526 INFO [stderr]   --> src/ast/mod.rs:63:1
Dec 19 13:48:10.526 INFO [stderr]    |
Dec 19 13:48:10.526 INFO [stderr] 63 | pub enum Statement<'ctx> {
Dec 19 13:48:10.526 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.526 INFO [stderr] 
Dec 19 13:48:10.527 INFO [stderr] warning: associated const is never used: `VARARGS`
Dec 19 13:48:10.527 INFO [stderr]   --> src/instruction_definitions.rs:90:5
Dec 19 13:48:10.527 INFO [stderr]    |
Dec 19 13:48:10.527 INFO [stderr] 90 |     pub const VARARGS: Count = Count(0);
Dec 19 13:48:10.527 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.527 INFO [stderr] 
Dec 19 13:48:10.527 INFO [stderr] warning: associated const is never used: `EMPTY`
Dec 19 13:48:10.527 INFO [stderr]   --> src/instruction_definitions.rs:91:5
Dec 19 13:48:10.527 INFO [stderr]    |
Dec 19 13:48:10.527 INFO [stderr] 91 |     pub const EMPTY: Count = Count(1);
Dec 19 13:48:10.527 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.527 INFO [stderr] 
Dec 19 13:48:10.527 INFO [stderr] warning: field is never used: `a`
Dec 19 13:48:10.528 INFO [stderr]   --> src/instruction_decoder.rs:75:5
Dec 19 13:48:10.528 INFO [stderr]    |
Dec 19 13:48:10.528 INFO [stderr] 75 |     a: u8,
Dec 19 13:48:10.528 INFO [stderr]    |     ^^^^^
Dec 19 13:48:10.528 INFO [stderr] 
Dec 19 13:48:10.528 INFO [stderr] warning: field is never used: `a`
Dec 19 13:48:10.528 INFO [stderr]   --> src/instruction_decoder.rs:89:5
Dec 19 13:48:10.528 INFO [stderr]    |
Dec 19 13:48:10.528 INFO [stderr] 89 |     a: u8,
Dec 19 13:48:10.528 INFO [stderr]    |     ^^^^^
Dec 19 13:48:10.528 INFO [stderr] 
Dec 19 13:48:10.528 INFO [stderr] warning: struct is never constructed: `SetUpvalueViewData`
Dec 19 13:48:10.528 INFO [stderr]   --> src/view/view_data.rs:55:1
Dec 19 13:48:10.528 INFO [stderr]    |
Dec 19 13:48:10.528 INFO [stderr] 55 | pub struct SetUpvalueViewData(pub AssignmentInfo);
Dec 19 13:48:10.528 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.528 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: struct is never constructed: `ASTContext`
Dec 19 13:48:10.924 INFO [stderr]  --> src/ast/mod.rs:9:1
Dec 19 13:48:10.924 INFO [stderr]   |
Dec 19 13:48:10.924 INFO [stderr] 9 | struct ASTContext {
Dec 19 13:48:10.924 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr]   |
Dec 19 13:48:10.924 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: struct is never constructed: `Scope`
Dec 19 13:48:10.924 INFO [stderr]   --> src/ast/mod.rs:16:1
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 16 | struct Scope<'parent, 'ctx: 'parent> {
Dec 19 13:48:10.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: struct is never constructed: `Block`
Dec 19 13:48:10.924 INFO [stderr]   --> src/ast/mod.rs:23:1
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 23 | struct Block<'ctx> {
Dec 19 13:48:10.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: struct is never constructed: `Node`
Dec 19 13:48:10.924 INFO [stderr]   --> src/ast/mod.rs:30:1
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 30 | struct Node<T: Sized> {
Dec 19 13:48:10.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: struct is never constructed: `StatementNode`
Dec 19 13:48:10.924 INFO [stderr]   --> src/ast/mod.rs:37:1
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 37 | struct StatementNode<'ctx, T: Sized> {
Dec 19 13:48:10.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: struct is never constructed: `StatLocalDecl`
Dec 19 13:48:10.924 INFO [stderr]   --> src/ast/mod.rs:49:1
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 49 | pub struct StatLocalDecl { // <'ctx> {
Dec 19 13:48:10.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: enum is never used: `Statement`
Dec 19 13:48:10.924 INFO [stderr]   --> src/ast/mod.rs:63:1
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 63 | pub enum Statement<'ctx> {
Dec 19 13:48:10.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.924 INFO [stderr] 
Dec 19 13:48:10.924 INFO [stderr] warning: associated const is never used: `VARARGS`
Dec 19 13:48:10.924 INFO [stderr]   --> src/instruction_definitions.rs:90:5
Dec 19 13:48:10.924 INFO [stderr]    |
Dec 19 13:48:10.924 INFO [stderr] 90 |     pub const VARARGS: Count = Count(0);
Dec 19 13:48:10.924 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.925 INFO [stderr] 
Dec 19 13:48:10.925 INFO [stderr] warning: associated const is never used: `EMPTY`
Dec 19 13:48:10.925 INFO [stderr]   --> src/instruction_definitions.rs:91:5
Dec 19 13:48:10.925 INFO [stderr]    |
Dec 19 13:48:10.925 INFO [stderr] 91 |     pub const EMPTY: Count = Count(1);
Dec 19 13:48:10.925 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.925 INFO [stderr] 
Dec 19 13:48:10.925 INFO [stderr] warning: field is never used: `a`
Dec 19 13:48:10.925 INFO [stderr]   --> src/instruction_decoder.rs:75:5
Dec 19 13:48:10.925 INFO [stderr]    |
Dec 19 13:48:10.925 INFO [stderr] 75 |     a: u8,
Dec 19 13:48:10.925 INFO [stderr]    |     ^^^^^
Dec 19 13:48:10.925 INFO [stderr] 
Dec 19 13:48:10.925 INFO [stderr] warning: field is never used: `a`
Dec 19 13:48:10.925 INFO [stderr]   --> src/instruction_decoder.rs:89:5
Dec 19 13:48:10.925 INFO [stderr]    |
Dec 19 13:48:10.925 INFO [stderr] 89 |     a: u8,
Dec 19 13:48:10.925 INFO [stderr]    |     ^^^^^
Dec 19 13:48:10.925 INFO [stderr] 
Dec 19 13:48:10.925 INFO [stderr] warning: struct is never constructed: `SetUpvalueViewData`
Dec 19 13:48:10.925 INFO [stderr]   --> src/view/view_data.rs:55:1
Dec 19 13:48:10.925 INFO [stderr]    |
Dec 19 13:48:10.925 INFO [stderr] 55 | pub struct SetUpvalueViewData(pub AssignmentInfo);
Dec 19 13:48:10.925 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:48:10.925 INFO [stderr] 
Dec 19 13:48:11.053 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.70s
Dec 19 13:48:12.400 INFO running `"docker" "inspect" "579958d23730a64a7c13b34793c9bd6c0233f3559d3395b5bc5fd36be3d37bba"`
Dec 19 13:48:12.746 INFO running `"docker" "rm" "-f" "579958d23730a64a7c13b34793c9bd6c0233f3559d3395b5bc5fd36be3d37bba"`
Dec 19 13:48:13.097 INFO [stdout] 579958d23730a64a7c13b34793c9bd6c0233f3559d3395b5bc5fd36be3d37bba