[INFO] fetching crate cereal_macros 0.3.5...
[INFO] checking cereal_macros-0.3.5 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate cereal_macros 0.3.5 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate cereal_macros 0.3.5 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cereal_macros 0.3.5
[INFO] finished tweaking crates.io crate cereal_macros 0.3.5
[INFO] tweaked toml for crates.io crate cereal_macros 0.3.5 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=forbid" "-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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] fc27a31973ebbf324a4218cb444593dc28a30c702dadd1f190f64b8f0722ca47
[INFO] running `"docker" "start" "-a" "fc27a31973ebbf324a4218cb444593dc28a30c702dadd1f190f64b8f0722ca47"`
[INFO] [stderr]     Checking cereal_macros v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/plugin.rs:2:42
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(box_syntax, plugin_registrar, quote, rustc_private)]
[INFO] [stderr]   |                                          ^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/plugin.rs:2:42
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(box_syntax, plugin_registrar, quote, rustc_private)]
[INFO] [stderr]   |                                          ^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::codemap`
[INFO] [stderr]   --> src/plugin.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 | use syntax::codemap::Span;
[INFO] [stderr]    |             ^^^^^^^ could not find `codemap` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::ext::base::MultiDecorator`
[INFO] [stderr]   --> src/plugin.rs:11:38
[INFO] [stderr]    |
[INFO] [stderr] 11 | use syntax::ext::base::{Annotatable, MultiDecorator, ExtCtxt};
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^ no `MultiDecorator` in `ext::base`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::ext::build::AstBuilder`
[INFO] [stderr]   --> src/plugin.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use syntax::ext::build::AstBuilder;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `AstBuilder` in `ext::build`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 quote_expr!(ecx, try!(::cereal::CerealData::read($reader)))
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:116:44
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 ecx.field_imm(span, ident, quote_expr!(ecx, try!(::cereal::CerealData::read($reader))))
[INFO] [stderr]     |                                            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:135:29
[INFO] [stderr]     |
[INFO] [stderr] 135 | ...                   quote_expr!(ecx, try!(::cereal::CerealData::read($reader)))
[INFO] [stderr]     |                       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:142:56
[INFO] [stderr]     |
[INFO] [stderr] 142 | ...                   ecx.field_imm(span, ident, quote_expr!(ecx, try!(::cereal::CerealData::read($reader))))
[INFO] [stderr]     |                                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:151:17
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 quote_expr!(ecx,
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:155:24
[INFO] [stderr]     |
[INFO] [stderr] 155 |             let expr = quote_expr!(ecx, try!(<u64 as ::cereal::CerealData>::read($reader)));
[INFO] [stderr]     |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     quote_expr!(ecx, Ok($expr))
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_stmt` in this scope
[INFO] [stderr]    --> src/plugin.rs:172:17
[INFO] [stderr]     |
[INFO] [stderr] 172 |                 quote_stmt!(ecx, {
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |             quote_expr!(ecx, {
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_stmt` in this scope
[INFO] [stderr]    --> src/plugin.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 quote_stmt!(ecx, {
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |             quote_expr!(ecx, {
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::codemap`
[INFO] [stderr]   --> src/plugin.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 | use syntax::codemap::Span;
[INFO] [stderr]    |             ^^^^^^^ could not find `codemap` in `syntax`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::ext::base::MultiDecorator`
[INFO] [stderr]   --> src/plugin.rs:11:38
[INFO] [stderr]    |
[INFO] [stderr] 11 | use syntax::ext::base::{Annotatable, MultiDecorator, ExtCtxt};
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^ no `MultiDecorator` in `ext::base`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syntax::ext::build::AstBuilder`
[INFO] [stderr]   --> src/plugin.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use syntax::ext::build::AstBuilder;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `AstBuilder` in `ext::build`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 quote_expr!(ecx, try!(::cereal::CerealData::read($reader)))
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:116:44
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 ecx.field_imm(span, ident, quote_expr!(ecx, try!(::cereal::CerealData::read($reader))))
[INFO] [stderr]     |                                            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:135:29
[INFO] [stderr]     |
[INFO] [stderr] 135 | ...                   quote_expr!(ecx, try!(::cereal::CerealData::read($reader)))
[INFO] [stderr]     |                       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:142:56
[INFO] [stderr]     |
[INFO] [stderr] 142 | ...                   ecx.field_imm(span, ident, quote_expr!(ecx, try!(::cereal::CerealData::read($reader))))
[INFO] [stderr]     |                                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:151:17
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 quote_expr!(ecx,
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:155:24
[INFO] [stderr]     |
[INFO] [stderr] 155 |             let expr = quote_expr!(ecx, try!(<u64 as ::cereal::CerealData>::read($reader)));
[INFO] [stderr]     |                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     quote_expr!(ecx, Ok($expr))
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_stmt` in this scope
[INFO] [stderr]    --> src/plugin.rs:172:17
[INFO] [stderr]     |
[INFO] [stderr] 172 |                 quote_stmt!(ecx, {
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |             quote_expr!(ecx, {
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `intern` in module `token`
[INFO] [stderr]   --> src/plugin.rs:19:47
[INFO] [stderr]    |
[INFO] [stderr] 19 |     registry.register_syntax_extension(token::intern("derive_CerealData"),
[INFO] [stderr]    |                                               ^^^^^^ not found in `token`
[INFO] [stderr] 
[INFO] [stderr] error[E0603]: module `deriving` is private
[INFO] [stderr]   --> src/plugin.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use syntax_ext::deriving::generic;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/issues/29597
[INFO] [stderr]   --> src/plugin.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | #[plugin_registrar]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^ help: remove this attribute
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/plugin.rs:24:98
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn expand(ecx: &mut ExtCtxt, span: Span, meta_item: &MetaItem, ann: &Annotatable, push: &mut FnMut(Annotatable)) {
[INFO] [stderr]    |                                                                                                  ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Annotatable)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_stmt` in this scope
[INFO] [stderr]    --> src/plugin.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 quote_stmt!(ecx, {
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `quote_expr` in this scope
[INFO] [stderr]    --> src/plugin.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |             quote_expr!(ecx, {
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rustc_plugin': import this through `rustc_driver::plugin` instead to make TLS work correctly. See https://github.com/rust-lang/rust/issues/62717
[INFO] [stderr]  --> src/plugin.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | extern crate rustc_plugin;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `intern` in module `token`
[INFO] [stderr]   --> src/plugin.rs:19:47
[INFO] [stderr]    |
[INFO] [stderr] 19 |     registry.register_syntax_extension(token::intern("derive_CerealData"),
[INFO] [stderr]    |                                               ^^^^^^ not found in `token`
[INFO] [stderr] 
[INFO] [stderr] error[E0603]: module `deriving` is private
[INFO] [stderr]   --> src/plugin.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use syntax_ext::deriving::generic;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/issues/29597
[INFO] [stderr]   --> src/plugin.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | #[plugin_registrar]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^ help: remove this attribute
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/plugin.rs:24:98
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn expand(ecx: &mut ExtCtxt, span: Span, meta_item: &MetaItem, ann: &Annotatable, push: &mut FnMut(Annotatable)) {
[INFO] [stderr]    |                                                                                                  ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Annotatable)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rustc_plugin': import this through `rustc_driver::plugin` instead to make TLS work correctly. See https://github.com/rust-lang/rust/issues/62717
[INFO] [stderr]  --> src/plugin.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | extern crate rustc_plugin;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/plugin.rs:123:82
[INFO] [stderr]     |
[INFO] [stderr] 123 |                 let pat = ecx.pat_lit(span, ecx.expr_lit(span, ast::LitKind::Int(id as u64, ast::LitIntType::Unsigned(ast::UintTy::U64))));
[INFO] [stderr]     |                                                                                  ^^^^^^^^^
[INFO] [stderr]     |                                                                                  |
[INFO] [stderr]     |                                                                                  expected u128, found u64
[INFO] [stderr]     |                                                                                  help: you can convert an `u64` to `u128`: `(id as u64).into()`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/plugin.rs:123:82
[INFO] [stderr]     |
[INFO] [stderr] 123 |                 let pat = ecx.pat_lit(span, ecx.expr_lit(span, ast::LitKind::Int(id as u64, ast::LitIntType::Unsigned(ast::UintTy::U64))));
[INFO] [stderr]     |                                                                                  ^^^^^^^^^
[INFO] [stderr]     |                                                                                  |
[INFO] [stderr]     |                                                                                  expected u128, found u64
[INFO] [stderr]     |                                                                                  help: you can convert an `u64` to `u128`: `(id as u64).into()`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/plugin.rs:148:31
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 ecx.arm(span, vec![pat], expr)
[INFO] [stderr]     |                               ^^^^^^^^^ expected struct `syntax::ptr::P`, found struct `std::vec::Vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `syntax::ptr::P<_>`
[INFO] [stderr]                found type `std::vec::Vec<syntax::ptr::P<_>>`
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/plugin.rs:148:31
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 ecx.arm(span, vec![pat], expr)
[INFO] [stderr]     |                               ^^^^^^^^^ expected struct `syntax::ptr::P`, found struct `std::vec::Vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `syntax::ptr::P<_>`
[INFO] [stderr]                found type `std::vec::Vec<syntax::ptr::P<_>>`
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/plugin.rs:150:37
[INFO] [stderr]     |
[INFO] [stderr] 150 |             arms.push(ecx.arm(span, vec![ecx.pat_wild(span)],
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `syntax::ptr::P`, found struct `std::vec::Vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `syntax::ptr::P<_>`
[INFO] [stderr]                found type `std::vec::Vec<syntax::ptr::P<_>>`
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `expr_none` found for type `&mut syntax::ext::base::ExtCtxt<'_>` in the current scope
[INFO] [stderr]    --> src/plugin.rs:160:24
[INFO] [stderr]     |
[INFO] [stderr] 160 |             return ecx.expr_none(span)
[INFO] [stderr]     |                        ^^^^^^^^^ help: there is a method with a similar name: `expr_some`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `expr_none` found for type `&mut syntax::ext::base::ExtCtxt<'_>` in the current scope
[INFO] [stderr]    --> src/plugin.rs:198:17
[INFO] [stderr]     |
[INFO] [stderr] 198 |             ecx.expr_none(span)
[INFO] [stderr]     |                 ^^^^^^^^^ help: there is a method with a similar name: `expr_some`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 22 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0432, E0557, E0599, E0603.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `cereal_macros`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/plugin.rs:150:37
[INFO] [stderr]     |
[INFO] [stderr] 150 |             arms.push(ecx.arm(span, vec![ecx.pat_wild(span)],
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `syntax::ptr::P`, found struct `std::vec::Vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `syntax::ptr::P<_>`
[INFO] [stderr]                found type `std::vec::Vec<syntax::ptr::P<_>>`
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `expr_none` found for type `&mut syntax::ext::base::ExtCtxt<'_>` in the current scope
[INFO] [stderr]    --> src/plugin.rs:160:24
[INFO] [stderr]     |
[INFO] [stderr] 160 |             return ecx.expr_none(span)
[INFO] [stderr]     |                        ^^^^^^^^^ help: there is a method with a similar name: `expr_some`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `expr_none` found for type `&mut syntax::ext::base::ExtCtxt<'_>` in the current scope
[INFO] [stderr]    --> src/plugin.rs:198:17
[INFO] [stderr]     |
[INFO] [stderr] 198 |             ecx.expr_none(span)
[INFO] [stderr]     |                 ^^^^^^^^^ help: there is a method with a similar name: `expr_some`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 22 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0432, E0557, E0599, E0603.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `cereal_macros`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fc27a31973ebbf324a4218cb444593dc28a30c702dadd1f190f64b8f0722ca47"`
[INFO] running `"docker" "rm" "-f" "fc27a31973ebbf324a4218cb444593dc28a30c702dadd1f190f64b8f0722ca47"`
[INFO] [stdout] fc27a31973ebbf324a4218cb444593dc28a30c702dadd1f190f64b8f0722ca47