[INFO] fetching crate cstree 0.13.0...
[INFO] testing cstree-0.13.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate cstree 0.13.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate cstree 0.13.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cstree 0.13.0
[INFO] tweaked toml for crates.io crate cstree 0.13.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cstree 0.13.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cstree 0.13.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e1d2e5c3b3b35a34ebe722ca7cb7b026f5d97b1b470f3e31728724bdba05a85
[INFO] running `Command { std: "docker" "start" "-a" "6e1d2e5c3b3b35a34ebe722ca7cb7b026f5d97b1b470f3e31728724bdba05a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e1d2e5c3b3b35a34ebe722ca7cb7b026f5d97b1b470f3e31728724bdba05a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1d2e5c3b3b35a34ebe722ca7cb7b026f5d97b1b470f3e31728724bdba05a85", kill_on_drop: false }`
[INFO] [stdout] 6e1d2e5c3b3b35a34ebe722ca7cb7b026f5d97b1b470f3e31728724bdba05a85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2641342903cd52e29a3782c4c615b4ea4280aae43ee54c3ab60c02104054c933
[INFO] running `Command { std: "docker" "start" "-a" "2641342903cd52e29a3782c4c615b4ea4280aae43ee54c3ab60c02104054c933", kill_on_drop: false }`
[INFO] [stderr]    Compiling text-size v1.1.1
[INFO] [stderr]    Compiling triomphe v0.1.14
[INFO] [stderr]    Compiling cstree v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "2641342903cd52e29a3782c4c615b4ea4280aae43ee54c3ab60c02104054c933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2641342903cd52e29a3782c4c615b4ea4280aae43ee54c3ab60c02104054c933", kill_on_drop: false }`
[INFO] [stdout] 2641342903cd52e29a3782c4c615b4ea4280aae43ee54c3ab60c02104054c933
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db1f97fd28cede569be4c0d1c9a1a410712c9476d08fba4f83de78186eb94859
[INFO] running `Command { std: "docker" "start" "-a" "db1f97fd28cede569be4c0d1c9a1a410712c9476d08fba4f83de78186eb94859", kill_on_drop: false }`
[INFO] [stderr] warning: invalid feature `salsa_2022_compat` in required-features of target `salsa`: `salsa_2022_compat` is not present in [features] section
[INFO] [stderr]    Compiling serde_json v1.0.141
[INFO] [stderr]    Compiling clap_builder v4.5.41
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling serde_test v1.0.177
[INFO] [stderr]    Compiling m_lexer v0.0.4
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion-plot v0.6.0
[INFO] [stderr]    Compiling clap v4.5.41
[INFO] [stderr]    Compiling criterion v0.7.0
[INFO] [stderr]    Compiling cstree v0.13.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find derive macro `Syntax` in this scope
[INFO] [stdout]  --> tests/it/regressions.rs:9:49
[INFO] [stdout]   |
[INFO] [stdout] 9 |     #[derive(Debug, Clone, Copy, PartialEq, Eq, Syntax)]
[INFO] [stdout]   |                                                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Syntax` is imported here, but it is only a trait, without a derive macro
[INFO] [stdout]  --> tests/it/regressions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cstree::Syntax;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `regressions::empty_tree_arc::SyntaxKind: Syntax` is not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:15:22
[INFO] [stdout]     |
[INFO] [stdout]  15 |     let mut builder: GreenNodeBuilder<SyntaxKind> = GreenNodeBuilder::new();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]    --> tests/it/regressions.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `Syntax` is implemented for `SyntaxKind`
[INFO] [stdout]    --> tests/it/main.rs:37:1
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl Syntax for SyntaxKind {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `cstree::build::GreenNodeBuilder`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:276:51
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub struct GreenNodeBuilder<'cache, 'interner, S: Syntax, I = TokenInterner> {
[INFO] [stdout]     |                                                   ^^^^^^ required by this bound in `GreenNodeBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `start_node` exists for struct `cstree::build::GreenNodeBuilder<'_, '_, regressions::empty_tree_arc::SyntaxKind>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:16:13
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     --------------- doesn't satisfy `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] ...
[INFO] [stdout]  16 |     builder.start_node(SyntaxKind::Root);
[INFO] [stdout]     |             ^^^^^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] note: the trait `Syntax` must be implemented
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `regressions::empty_tree_arc::SyntaxKind: Syntax` is not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:15:53
[INFO] [stdout]     |
[INFO] [stdout]  15 |     let mut builder: GreenNodeBuilder<SyntaxKind> = GreenNodeBuilder::new();
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]    --> tests/it/regressions.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `Syntax` is implemented for `SyntaxKind`
[INFO] [stdout]    --> tests/it/main.rs:37:1
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl Syntax for SyntaxKind {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `cstree::build::GreenNodeBuilder`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:276:51
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub struct GreenNodeBuilder<'cache, 'interner, S: Syntax, I = TokenInterner> {
[INFO] [stdout]     |                                                   ^^^^^^ required by this bound in `GreenNodeBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `regressions::empty_tree_arc::SyntaxKind: Syntax` is not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:15:53
[INFO] [stdout]     |
[INFO] [stdout]  15 |     let mut builder: GreenNodeBuilder<SyntaxKind> = GreenNodeBuilder::new();
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]    --> tests/it/regressions.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `Syntax` is implemented for `SyntaxKind`
[INFO] [stdout]    --> tests/it/main.rs:37:1
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl Syntax for SyntaxKind {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `cstree::build::GreenNodeBuilder::<'static, 'static, S>::new`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:282:9
[INFO] [stdout]     |
[INFO] [stdout] 282 | impl<S: Syntax> GreenNodeBuilder<'static, 'static, S> {
[INFO] [stdout]     |         ^^^^^^ required by this bound in `GreenNodeBuilder::<'static, 'static, S>::new`
[INFO] [stdout] 283 |     /// Creates new builder with an empty [`NodeCache`].
[INFO] [stdout] 284 |     pub fn new() -> Self {
[INFO] [stdout]     |            --- required by a bound in this associated function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `finish_node` exists for struct `cstree::build::GreenNodeBuilder<'_, '_, regressions::empty_tree_arc::SyntaxKind>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:17:13
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     --------------- doesn't satisfy `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] ...
[INFO] [stdout]  17 |     builder.finish_node();
[INFO] [stdout]     |             ^^^^^^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] note: the trait `Syntax` must be implemented
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `finish` exists for struct `cstree::build::GreenNodeBuilder<'_, '_, regressions::empty_tree_arc::SyntaxKind>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:18:30
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     --------------- doesn't satisfy `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] ...
[INFO] [stdout]  18 |     let (green, _) = builder.finish();
[INFO] [stdout]     |                              ^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] note: the trait `Syntax` must be implemented
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `regressions::empty_tree_arc::SyntaxKind: Syntax` is not satisfied
[INFO] [stdout]   --> tests/it/regressions.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let root: SyntaxNode<SyntaxKind> = SyntaxNode::new_root(green);
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]   --> tests/it/regressions.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     enum SyntaxKind {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `Syntax` is implemented for `SyntaxKind`
[INFO] [stdout]   --> tests/it/main.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Syntax for SyntaxKind {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/syntax/node.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct SyntaxNode<S: Syntax, D: 'static = ()> {
[INFO] [stdout]    |                          ^^^^^^ required by this bound in `SyntaxNode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `regressions::empty_tree_arc::SyntaxKind: Syntax` is not satisfied
[INFO] [stdout]   --> tests/it/regressions.rs:19:40
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let root: SyntaxNode<SyntaxKind> = SyntaxNode::new_root(green);
[INFO] [stdout]    |                                        ^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]   --> tests/it/regressions.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     enum SyntaxKind {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `Syntax` is implemented for `SyntaxKind`
[INFO] [stdout]   --> tests/it/main.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Syntax for SyntaxKind {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/syntax/node.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct SyntaxNode<S: Syntax, D: 'static = ()> {
[INFO] [stdout]    |                          ^^^^^^ required by this bound in `SyntaxNode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `regressions::empty_tree_arc::SyntaxKind: Syntax` is not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:19:40
[INFO] [stdout]     |
[INFO] [stdout]  19 |     let root: SyntaxNode<SyntaxKind> = SyntaxNode::new_root(green);
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]    --> tests/it/regressions.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `Syntax` is implemented for `SyntaxKind`
[INFO] [stdout]    --> tests/it/main.rs:37:1
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl Syntax for SyntaxKind {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode::<S, D>::new_root`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/syntax/node.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 | impl<S: Syntax, D> SyntaxNode<S, D> {
[INFO] [stdout]     |         ^^^^^^ required by this bound in `SyntaxNode::<S, D>::new_root`
[INFO] [stdout] ...
[INFO] [stdout] 300 |     pub fn new_root(green: GreenNode) -> Self {
[INFO] [stdout]     |            -------- required by a bound in this associated function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `kind` exists for struct `cstree::syntax::SyntaxNode<regressions::empty_tree_arc::SyntaxKind>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/it/regressions.rs:20:21
[INFO] [stdout]     |
[INFO] [stdout]  11 |     enum SyntaxKind {
[INFO] [stdout]     |     --------------- doesn't satisfy `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] ...
[INFO] [stdout]  20 |     assert_eq!(root.kind(), SyntaxKind::Root);
[INFO] [stdout]     |                     ^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `regressions::empty_tree_arc::SyntaxKind: Syntax`
[INFO] [stdout] note: the trait `Syntax` must be implemented
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cstree` (test "it") due to 11 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "db1f97fd28cede569be4c0d1c9a1a410712c9476d08fba4f83de78186eb94859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db1f97fd28cede569be4c0d1c9a1a410712c9476d08fba4f83de78186eb94859", kill_on_drop: false }`
[INFO] [stdout] db1f97fd28cede569be4c0d1c9a1a410712c9476d08fba4f83de78186eb94859