[INFO] fetching crate gc_plugin 0.1.1...
[INFO] checking gc_plugin-0.1.1 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate gc_plugin 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate gc_plugin 0.1.1 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gc_plugin 0.1.1
[INFO] finished tweaking crates.io crate gc_plugin 0.1.1
[INFO] tweaked toml for crates.io crate gc_plugin 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: support for rustc plugins has been removed from rustc. library `gc_plugin` should not specify `plugin = true`
[INFO] [stderr] warning: support for `plugin = true` will be removed from cargo in the future
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8204bf585150b6d10f1f1bb841a7fc88780fac81b54bf44fd0dcf1a48e89975
[INFO] running `Command { std: "docker" "start" "-a" "e8204bf585150b6d10f1f1bb841a7fc88780fac81b54bf44fd0dcf1a48e89975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8204bf585150b6d10f1f1bb841a7fc88780fac81b54bf44fd0dcf1a48e89975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8204bf585150b6d10f1f1bb841a7fc88780fac81b54bf44fd0dcf1a48e89975", kill_on_drop: false }`
[INFO] [stdout] e8204bf585150b6d10f1f1bb841a7fc88780fac81b54bf44fd0dcf1a48e89975
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19674fed284bf7d811e1e4176b106d488cec47a0d73f693cb8d078d32ae8da4f
[INFO] running `Command { std: "docker" "start" "-a" "19674fed284bf7d811e1e4176b106d488cec47a0d73f693cb8d078d32ae8da4f", kill_on_drop: false }`
[INFO] [stderr] warning: support for rustc plugins has been removed from rustc. library `gc_plugin` should not specify `plugin = true`
[INFO] [stderr] warning: support for `plugin = true` will be removed from cargo in the future
[INFO] [stderr]     Checking gc_plugin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:25:74
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(box expand_trace))
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(Box::new(expand_trace)))
[INFO] [stdout]    |                                                                          ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:25:74
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(box expand_trace))
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(Box::new(expand_trace)))
[INFO] [stdout]    |                                                                          ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |                              ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |                              ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax_ext`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate syntax_ext;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax_ext`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate syntax_ext;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rustc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the following crate versions were found:
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.tsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.lsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.msan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.safestack.a
[INFO] [stdout]   = help: please recompile that crate using --crate-type lib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rustc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the following crate versions were found:
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.tsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.lsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.msan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/5518eaa946291f00471af8b254b2a1715f234882/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.safestack.a
[INFO] [stdout]   = help: please recompile that crate using --crate-type lib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:44:60
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:44:60
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:55:60
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:55:60
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:66:60
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:66:60
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]   --> src/lib.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[plugin_registrar]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]   --> src/lib.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[plugin_registrar]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:28:100
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut dyn FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:28:100
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut dyn FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                              ^^^^^     ---------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a: /* Type */| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                              ^^^^^     ---------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a: /* Type */| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0462, E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0462, E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gc_plugin` (lib) due to 13 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `gc_plugin` (lib test) due to 13 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "19674fed284bf7d811e1e4176b106d488cec47a0d73f693cb8d078d32ae8da4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19674fed284bf7d811e1e4176b106d488cec47a0d73f693cb8d078d32ae8da4f", kill_on_drop: false }`
[INFO] [stdout] 19674fed284bf7d811e1e4176b106d488cec47a0d73f693cb8d078d32ae8da4f
[INFO] checking gc_plugin-0.1.1 against try#7622c0f807a4e13c4db886a1681bf343795692df+rustflags=-Dnon_local_definitions for pr-120393
[INFO] extracting crate gc_plugin 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate gc_plugin 0.1.1 on toolchain 7622c0f807a4e13c4db886a1681bf343795692df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gc_plugin 0.1.1
[INFO] finished tweaking crates.io crate gc_plugin 0.1.1
[INFO] tweaked toml for crates.io crate gc_plugin 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: support for rustc plugins has been removed from rustc. library `gc_plugin` should not specify `plugin = true`
[INFO] [stderr] warning: support for `plugin = true` will be removed from cargo in the future
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a9922edfa55a13c3e90b442977cf3b41212cca91e4034ec63c7d657bcdb18c0
[INFO] running `Command { std: "docker" "start" "-a" "9a9922edfa55a13c3e90b442977cf3b41212cca91e4034ec63c7d657bcdb18c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a9922edfa55a13c3e90b442977cf3b41212cca91e4034ec63c7d657bcdb18c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a9922edfa55a13c3e90b442977cf3b41212cca91e4034ec63c7d657bcdb18c0", kill_on_drop: false }`
[INFO] [stdout] 9a9922edfa55a13c3e90b442977cf3b41212cca91e4034ec63c7d657bcdb18c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dnon_local_definitions" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd21a386f6a78396d7766e81d1072612b410c8103f623d16a36ffb322091483a
[INFO] running `Command { std: "docker" "start" "-a" "cd21a386f6a78396d7766e81d1072612b410c8103f623d16a36ffb322091483a", kill_on_drop: false }`
[INFO] [stderr] warning: support for rustc plugins has been removed from rustc. library `gc_plugin` should not specify `plugin = true`
[INFO] [stderr] warning: support for `plugin = true` will be removed from cargo in the future
[INFO] [stderr]     Checking gc_plugin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:25:74
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(box expand_trace))
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(Box::new(expand_trace)))
[INFO] [stdout]    |                                                                          ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:25:74
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(box expand_trace))
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reg.register_syntax_extension(intern("derive_Trace"), MultiDecorator(Box::new(expand_trace)))
[INFO] [stdout]    |                                                                          ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |                              ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, box_syntax)]
[INFO] [stdout]   |                              ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax_ext`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate syntax_ext;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax_ext`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate syntax_ext;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rustc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the following crate versions were found:
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.tsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.lsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.msan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.safestack.a
[INFO] [stdout]   = help: please recompile that crate using --crate-type lib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rustc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the following crate versions were found:
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.tsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.lsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.msan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/7622c0f807a4e13c4db886a1681bf343795692df/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.safestack.a
[INFO] [stdout]   = help: please recompile that crate using --crate-type lib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_plugin`
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate rustc_plugin;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:44:60
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:44:60
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:55:60
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:55:60
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:66:60
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:66:60
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(box trace_substructure),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 combine_substructure: combine_substructure(Box::new(trace_substructure)),
[INFO] [stdout]    |                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]   --> src/lib.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[plugin_registrar]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin_registrar` in this scope
[INFO] [stdout]   --> src/lib.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[plugin_registrar]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `plugin_registrar` is in scope, but it is a function, not an attribute
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:28:100
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut dyn FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:28:100
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn expand_trace(cx: &mut ExtCtxt, span: Span, mitem: &MetaItem, item: &Annotatable, push: &mut dyn FnMut(Annotatable)) {
[INFO] [stdout]    |                                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                              ^^^^^     ---------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a: /* Type */| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                              ^^^^^     ---------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 103 |         if attrs.iter().all(|ref a: /* Type */| !a.check_name("unsafe_ignore_trace")) {
[INFO] [stdout]     |                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0462, E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0462, E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gc_plugin` (lib) due to 13 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `gc_plugin` (lib test) due to 13 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "cd21a386f6a78396d7766e81d1072612b410c8103f623d16a36ffb322091483a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd21a386f6a78396d7766e81d1072612b410c8103f623d16a36ffb322091483a", kill_on_drop: false }`
[INFO] [stdout] cd21a386f6a78396d7766e81d1072612b410c8103f623d16a36ffb322091483a
