[INFO] fetching crate cstree 0.12.0...
[INFO] testing cstree-0.12.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate cstree 0.12.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate cstree 0.12.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cstree 0.12.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate cstree 0.12.0
[INFO] tweaked toml for crates.io crate cstree 0.12.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate cstree 0.12.0 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded triomphe v0.1.8
[INFO] [stderr]   Downloaded serde_test v1.0.160
[INFO] [stderr]   Downloaded sptr v0.3.2
[INFO] [stderr]   Downloaded text-size v1.1.0
[INFO] [stderr]   Downloaded cstree_derive v0.12.0
[INFO] [stderr]   Downloaded syn v2.0.14
[INFO] [stderr]   Downloaded libc v0.2.141
[INFO] [stderr]   Downloaded m_lexer v0.0.4
[INFO] [stderr]   Downloaded lasso v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 762c76f27c752b78ac8c826b1a358f8226c644146f4d9887d97265c328dd78a3
[INFO] running `Command { std: "docker" "start" "-a" "762c76f27c752b78ac8c826b1a358f8226c644146f4d9887d97265c328dd78a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "762c76f27c752b78ac8c826b1a358f8226c644146f4d9887d97265c328dd78a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "762c76f27c752b78ac8c826b1a358f8226c644146f4d9887d97265c328dd78a3", kill_on_drop: false }`
[INFO] [stdout] 762c76f27c752b78ac8c826b1a358f8226c644146f4d9887d97265c328dd78a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fe6cf2899356e8af4e4088be5ed74d2bc8fe31f1b80c6a9bd82bf7e3cf4048e
[INFO] running `Command { std: "docker" "start" "-a" "9fe6cf2899356e8af4e4088be5ed74d2bc8fe31f1b80c6a9bd82bf7e3cf4048e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling sptr v0.3.2
[INFO] [stderr]    Compiling triomphe v0.1.8
[INFO] [stderr]    Compiling text-size v1.1.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling cstree v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "9fe6cf2899356e8af4e4088be5ed74d2bc8fe31f1b80c6a9bd82bf7e3cf4048e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fe6cf2899356e8af4e4088be5ed74d2bc8fe31f1b80c6a9bd82bf7e3cf4048e", kill_on_drop: false }`
[INFO] [stdout] 9fe6cf2899356e8af4e4088be5ed74d2bc8fe31f1b80c6a9bd82bf7e3cf4048e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26c6740d06f0a859c9120cf3dc031d0e8980df6013051faabf23974456831c5f
[INFO] running `Command { std: "docker" "start" "-a" "26c6740d06f0a859c9120cf3dc031d0e8980df6013051faabf23974456831c5f", 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 memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling plotters-backend v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling plotters-svg v0.3.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling syn v2.0.14
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling serde_test v1.0.160
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling rayon v1.7.0
[INFO] [stderr]    Compiling plotters v0.3.4
[INFO] [stderr]    Compiling walkdir v2.3.3
[INFO] [stderr]    Compiling regex v1.7.3
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling csv v1.2.1
[INFO] [stderr]    Compiling m_lexer v0.0.4
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling cstree v0.12.0 (/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]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `GreenNodeBuilder`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:272:51
[INFO] [stdout]     |
[INFO] [stdout] 272 | 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 `GreenNodeBuilder<'_, '_, 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 on `GreenNodeBuilder<'_, '_, SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | 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]     |                                                     ^^^^^^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `GreenNodeBuilder::<'static, 'static, S>::new`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 | impl<S: Syntax> GreenNodeBuilder<'static, 'static, S> {
[INFO] [stdout]     |         ^^^^^^ required by this bound in `GreenNodeBuilder::<'static, 'static, S>::new`
[INFO] [stdout] 279 |     /// Creates new builder with an empty [`NodeCache`].
[INFO] [stdout] 280 |     pub fn new() -> Self {
[INFO] [stdout]     |            --- required by a bound in this associated function
[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]     |                                                     ^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `GreenNodeBuilder`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:272:51
[INFO] [stdout]     |
[INFO] [stdout] 272 | 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 `finish_node` exists for struct `GreenNodeBuilder<'_, '_, 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 on `GreenNodeBuilder<'_, '_, SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `finish` exists for struct `GreenNodeBuilder<'_, '_, 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 on `GreenNodeBuilder<'_, '_, SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | 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:19:40
[INFO] [stdout]     |
[INFO] [stdout] 19  |     let root: SyntaxNode<SyntaxKind> = SyntaxNode::new_root(green);
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode::<S, D>::new_root`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/syntax/node.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 | impl<S: Syntax, D> SyntaxNode<S, D> {
[INFO] [stdout]     |         ^^^^^^ required by this bound in `SyntaxNode::<S, D>::new_root`
[INFO] [stdout] ...
[INFO] [stdout] 299 |     pub fn new_root(green: GreenNode) -> Self {
[INFO] [stdout]     |            -------- required by a bound in this associated function
[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]    |                                        ^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Syntax`:
[INFO] [stdout]              SyntaxKind
[INFO] [stdout]              TestSyntaxKind
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/syntax/node.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct SyntaxNode<S: Syntax, D: 'static = ()> {
[INFO] [stdout]    |                          ^^^^^^ required by this bound in `SyntaxNode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `kind` exists for struct `SyntaxNode<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 on `SyntaxNode<SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cstree` (test "it") due to 11 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "26c6740d06f0a859c9120cf3dc031d0e8980df6013051faabf23974456831c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26c6740d06f0a859c9120cf3dc031d0e8980df6013051faabf23974456831c5f", kill_on_drop: false }`
[INFO] [stdout] 26c6740d06f0a859c9120cf3dc031d0e8980df6013051faabf23974456831c5f
[INFO] testing cstree-0.12.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate cstree 0.12.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate cstree 0.12.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cstree 0.12.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate cstree 0.12.0
[INFO] tweaked toml for crates.io crate cstree 0.12.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate cstree 0.12.0 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57b9ff654e3d6f70a01fe28f2874fb7667caca71f8b22a634268122425cac2cb
[INFO] running `Command { std: "docker" "start" "-a" "57b9ff654e3d6f70a01fe28f2874fb7667caca71f8b22a634268122425cac2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57b9ff654e3d6f70a01fe28f2874fb7667caca71f8b22a634268122425cac2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57b9ff654e3d6f70a01fe28f2874fb7667caca71f8b22a634268122425cac2cb", kill_on_drop: false }`
[INFO] [stdout] 57b9ff654e3d6f70a01fe28f2874fb7667caca71f8b22a634268122425cac2cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3496c5bf93bdb7f77a0b975d307316b707425df29c7e1e0e0877ddcdbdb17de3
[INFO] running `Command { std: "docker" "start" "-a" "3496c5bf93bdb7f77a0b975d307316b707425df29c7e1e0e0877ddcdbdb17de3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling sptr v0.3.2
[INFO] [stderr]    Compiling text-size v1.1.0
[INFO] [stderr]    Compiling triomphe v0.1.8
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling cstree v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "3496c5bf93bdb7f77a0b975d307316b707425df29c7e1e0e0877ddcdbdb17de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3496c5bf93bdb7f77a0b975d307316b707425df29c7e1e0e0877ddcdbdb17de3", kill_on_drop: false }`
[INFO] [stdout] 3496c5bf93bdb7f77a0b975d307316b707425df29c7e1e0e0877ddcdbdb17de3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12c01d3485a9d7047087a4919ea0d035cce94082b6eedc3c28e1348ec432db51
[INFO] running `Command { std: "docker" "start" "-a" "12c01d3485a9d7047087a4919ea0d035cce94082b6eedc3c28e1348ec432db51", 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 memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling plotters-backend v0.3.4
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling syn v2.0.14
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling plotters-svg v0.3.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling serde_test v1.0.160
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling walkdir v2.3.3
[INFO] [stderr]    Compiling regex v1.7.3
[INFO] [stderr]    Compiling rayon v1.7.0
[INFO] [stderr]    Compiling plotters v0.3.4
[INFO] [stderr]    Compiling csv v1.2.1
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling m_lexer v0.0.4
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling cstree v0.12.0 (/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]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `GreenNodeBuilder`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:272:51
[INFO] [stdout]     |
[INFO] [stdout] 272 | 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 `GreenNodeBuilder<'_, '_, 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 on `GreenNodeBuilder<'_, '_, SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | 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]     |                                                     ^^^^^^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `GreenNodeBuilder::<'static, 'static, S>::new`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 | impl<S: Syntax> GreenNodeBuilder<'static, 'static, S> {
[INFO] [stdout]     |         ^^^^^^ required by this bound in `GreenNodeBuilder::<'static, 'static, S>::new`
[INFO] [stdout] 279 |     /// Creates new builder with an empty [`NodeCache`].
[INFO] [stdout] 280 |     pub fn new() -> Self {
[INFO] [stdout]     |            --- required by a bound in this associated function
[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]     |                                                     ^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `GreenNodeBuilder`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/green/builder.rs:272:51
[INFO] [stdout]     |
[INFO] [stdout] 272 | 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 `finish_node` exists for struct `GreenNodeBuilder<'_, '_, 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 on `GreenNodeBuilder<'_, '_, SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `finish` exists for struct `GreenNodeBuilder<'_, '_, 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 on `GreenNodeBuilder<'_, '_, SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | 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:19:40
[INFO] [stdout]     |
[INFO] [stdout] 19  |     let root: SyntaxNode<SyntaxKind> = SyntaxNode::new_root(green);
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Syntax`:
[INFO] [stdout]               SyntaxKind
[INFO] [stdout]               TestSyntaxKind
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode::<S, D>::new_root`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/syntax/node.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 | impl<S: Syntax, D> SyntaxNode<S, D> {
[INFO] [stdout]     |         ^^^^^^ required by this bound in `SyntaxNode::<S, D>::new_root`
[INFO] [stdout] ...
[INFO] [stdout] 299 |     pub fn new_root(green: GreenNode) -> Self {
[INFO] [stdout]     |            -------- required by a bound in this associated function
[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]    |                                        ^^^^^^^^^^ the trait `Syntax` is not implemented for `regressions::empty_tree_arc::SyntaxKind`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Syntax`:
[INFO] [stdout]              SyntaxKind
[INFO] [stdout]              TestSyntaxKind
[INFO] [stdout] note: required by a bound in `cstree::syntax::SyntaxNode`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/syntax/node.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct SyntaxNode<S: Syntax, D: 'static = ()> {
[INFO] [stdout]    |                          ^^^^^^ required by this bound in `SyntaxNode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `kind` exists for struct `SyntaxNode<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 on `SyntaxNode<SyntaxKind>` 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:188:1
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub trait Syntax: Sized + Copy + fmt::Debug + Eq {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cstree` (test "it") due to 11 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "12c01d3485a9d7047087a4919ea0d035cce94082b6eedc3c28e1348ec432db51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12c01d3485a9d7047087a4919ea0d035cce94082b6eedc3c28e1348ec432db51", kill_on_drop: false }`
[INFO] [stdout] 12c01d3485a9d7047087a4919ea0d035cce94082b6eedc3c28e1348ec432db51
