[INFO] crate overflower 0.4.6 is already in cache
[INFO] checking overflower-0.4.6 against nightly-2019-10-27 for pr-65897
[INFO] extracting crate overflower 0.4.6 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate overflower 0.4.6 on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate overflower 0.4.6
[INFO] finished tweaking crates.io crate overflower 0.4.6
[INFO] tweaked toml for crates.io crate overflower 0.4.6 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d32bba8242a939f2e169b3bea4b059d1e5ad939888ea73b2a58787b2bb9a3ac3
[INFO] running `"docker" "start" "-a" "d32bba8242a939f2e169b3bea4b059d1e5ad939888ea73b2a58787b2bb9a3ac3"`
[INFO] [stderr]     Checking overflower_support v0.1.5
[INFO] [stderr]     Checking overflower v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `ext` in `syntax`
[INFO] [stderr]   --> src/lib.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 | use syntax::ext::base::{Annotatable, ExtCtxt, SyntaxExtension};
[INFO] [stderr]    |             ^^^ could not find `ext` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `ext` in `syntax`
[INFO] [stderr]   --> src/lib.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 | use syntax::ext::build::AstBuilder;
[INFO] [stderr]    |             ^^^ could not find `ext` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::ast::NestedMetaItemKind`
[INFO] [stderr]   --> src/lib.rs:13:57
[INFO] [stderr]    |
[INFO] [stderr] 13 |                   LitKind, Mac, MetaItem, MetaItemKind, NestedMetaItemKind,
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                         |
[INFO] [stderr]    |                                                         no `NestedMetaItemKind` in `ast`
[INFO] [stderr]    |                                                         help: a similar name exists in the module: `NestedMetaItem`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `syntax::fold`, `syntax::fold`
[INFO] [stderr]   --> src/lib.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 | use syntax::fold::{self, Folder};
[INFO] [stderr]    |             ^^^^   ^^^^ no `fold` in the root
[INFO] [stderr]    |             |
[INFO] [stderr]    |             could not find `fold` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `ext` in `syntax`
[INFO] [stderr]   --> src/lib.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 | use syntax::ext::base::{Annotatable, ExtCtxt, SyntaxExtension};
[INFO] [stderr]    |             ^^^ could not find `ext` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `ext` in `syntax`
[INFO] [stderr]   --> src/lib.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 | use syntax::ext::build::AstBuilder;
[INFO] [stderr]    |             ^^^ could not find `ext` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::ast::NestedMetaItemKind`
[INFO] [stderr]   --> src/lib.rs:13:57
[INFO] [stderr]    |
[INFO] [stderr] 13 |                   LitKind, Mac, MetaItem, MetaItemKind, NestedMetaItemKind,
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                         |
[INFO] [stderr]    |                                                         no `NestedMetaItemKind` in `ast`
[INFO] [stderr]    |                                                         help: a similar name exists in the module: `NestedMetaItem`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `syntax::fold`, `syntax::fold`
[INFO] [stderr]   --> src/lib.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 | use syntax::fold::{self, Folder};
[INFO] [stderr]    |             ^^^^   ^^^^ no `fold` in the root
[INFO] [stderr]    |             |
[INFO] [stderr]    |             could not find `fold` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `SyntaxExtension`
[INFO] [stderr]    --> src/lib.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |         SyntaxExtension::MultiModifier(Box::new(|cx: &mut ExtCtxt, _span: Span, mi: &MetaItem,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ use of undeclared type or module `SyntaxExtension`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:254:13
[INFO] [stderr]     |
[INFO] [stderr] 254 |             Annotatable::Item(i) => Annotatable::Item(expect_one(o.fold_item(i))),
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:254:37
[INFO] [stderr]     |
[INFO] [stderr] 254 |             Annotatable::Item(i) => Annotatable::Item(expect_one(o.fold_item(i))),
[INFO] [stderr]     |                                     ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:255:13
[INFO] [stderr]     |
[INFO] [stderr] 255 |             Annotatable::TraitItem(i) => Annotatable::TraitItem(i.map(|i|
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:255:42
[INFO] [stderr]     |
[INFO] [stderr] 255 |             Annotatable::TraitItem(i) => Annotatable::TraitItem(i.map(|i|
[INFO] [stderr]     |                                          ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:257:13
[INFO] [stderr]     |
[INFO] [stderr] 257 |             Annotatable::ImplItem(i) => Annotatable::ImplItem(i.map(|i|
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:257:41
[INFO] [stderr]     |
[INFO] [stderr] 257 |             Annotatable::ImplItem(i) => Annotatable::ImplItem(i.map(|i|
[INFO] [stderr]     |                                         ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |             Annotatable::Stmt(s) => Annotatable::Stmt(s.map(|s| expect_one(o.fold_stmt(s)))),
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:259:37
[INFO] [stderr]     |
[INFO] [stderr] 259 |             Annotatable::Stmt(s) => Annotatable::Stmt(s.map(|s| expect_one(o.fold_stmt(s)))),
[INFO] [stderr]     |                                     ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             Annotatable::Expr(e) => Annotatable::Expr(o.fold_expr(e)),
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:260:37
[INFO] [stderr]     |
[INFO] [stderr] 260 |             Annotatable::Expr(e) => Annotatable::Expr(o.fold_expr(e)),
[INFO] [stderr]     |                                     ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stderr]   --> src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |     cx: &'a mut ExtCtxt<'cx>,
[INFO] [stderr]    |                 ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stderr]    --> src/lib.rs:160:21
[INFO] [stderr]     |
[INFO] [stderr] 160 | fn ref_mut(cx: &mut ExtCtxt, l: P<Expr>, r: P<Expr>) -> Vec<P<Expr>> {
[INFO] [stderr]     |                     ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stderr]    --> src/lib.rs:243:59
[INFO] [stderr]     |
[INFO] [stderr] 243 |         SyntaxExtension::MultiModifier(Box::new(|cx: &mut ExtCtxt, _span: Span, mi: &MetaItem,
[INFO] [stderr]     |                                                           ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Annotatable` in this scope
[INFO] [stderr]    --> src/lib.rs:244:18
[INFO] [stderr]     |
[INFO] [stderr] 244 |               a: Annotatable| {
[INFO] [stderr]     |                  ^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `SyntaxExtension`
[INFO] [stderr]    --> src/lib.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |         SyntaxExtension::MultiModifier(Box::new(|cx: &mut ExtCtxt, _span: Span, mi: &MetaItem,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ use of undeclared type or module `SyntaxExtension`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:254:13
[INFO] [stderr]     |
[INFO] [stderr] 254 |             Annotatable::Item(i) => Annotatable::Item(expect_one(o.fold_item(i))),
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:254:37
[INFO] [stderr]     |
[INFO] [stderr] 254 |             Annotatable::Item(i) => Annotatable::Item(expect_one(o.fold_item(i))),
[INFO] [stderr]     |                                     ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:255:13
[INFO] [stderr]     |
[INFO] [stderr] 255 |             Annotatable::TraitItem(i) => Annotatable::TraitItem(i.map(|i|
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:255:42
[INFO] [stderr]     |
[INFO] [stderr] 255 |             Annotatable::TraitItem(i) => Annotatable::TraitItem(i.map(|i|
[INFO] [stderr]     |                                          ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:257:13
[INFO] [stderr]     |
[INFO] [stderr] 257 |             Annotatable::ImplItem(i) => Annotatable::ImplItem(i.map(|i|
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:257:41
[INFO] [stderr]     |
[INFO] [stderr] 257 |             Annotatable::ImplItem(i) => Annotatable::ImplItem(i.map(|i|
[INFO] [stderr]     |                                         ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |             Annotatable::Stmt(s) => Annotatable::Stmt(s.map(|s| expect_one(o.fold_stmt(s)))),
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:259:37
[INFO] [stderr]     |
[INFO] [stderr] 259 |             Annotatable::Stmt(s) => Annotatable::Stmt(s.map(|s| expect_one(o.fold_stmt(s)))),
[INFO] [stderr]     |                                     ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             Annotatable::Expr(e) => Annotatable::Expr(o.fold_expr(e)),
[INFO] [stderr]     |             ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Annotatable`
[INFO] [stderr]    --> src/lib.rs:260:37
[INFO] [stderr]     |
[INFO] [stderr] 260 |             Annotatable::Expr(e) => Annotatable::Expr(o.fold_expr(e)),
[INFO] [stderr]     |                                     ^^^^^^^^^^^ use of undeclared type or module `Annotatable`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stderr]   --> src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |     cx: &'a mut ExtCtxt<'cx>,
[INFO] [stderr]    |                 ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stderr]    --> src/lib.rs:160:21
[INFO] [stderr]     |
[INFO] [stderr] 160 | fn ref_mut(cx: &mut ExtCtxt, l: P<Expr>, r: P<Expr>) -> Vec<P<Expr>> {
[INFO] [stderr]     |                     ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExtCtxt` in this scope
[INFO] [stderr]    --> src/lib.rs:243:59
[INFO] [stderr]     |
[INFO] [stderr] 243 |         SyntaxExtension::MultiModifier(Box::new(|cx: &mut ExtCtxt, _span: Span, mi: &MetaItem,
[INFO] [stderr]     |                                                           ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Annotatable` in this scope
[INFO] [stderr]    --> src/lib.rs:244:18
[INFO] [stderr]     |
[INFO] [stderr] 244 |               a: Annotatable| {
[INFO] [stderr]     |                  ^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 19 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: aborting due to 19 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `overflower`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `overflower`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d32bba8242a939f2e169b3bea4b059d1e5ad939888ea73b2a58787b2bb9a3ac3"`
[INFO] running `"docker" "rm" "-f" "d32bba8242a939f2e169b3bea4b059d1e5ad939888ea73b2a58787b2bb9a3ac3"`
[INFO] [stdout] d32bba8242a939f2e169b3bea4b059d1e5ad939888ea73b2a58787b2bb9a3ac3