[INFO] cloning repository https://github.com/peroveri/em-refactor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peroveri/em-refactor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoveri%2Fem-refactor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoveri%2Fem-refactor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e52f0de7a6ef7300cb68d4f4f6c0a50a9ab46b27
[INFO] documenting peroveri/em-refactor against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoveri%2Fem-refactor" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peroveri/em-refactor on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/peroveri/em-refactor
[INFO] finished tweaking git repo https://github.com/peroveri/em-refactor
[INFO] tweaked toml for git repo https://github.com/peroveri/em-refactor written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/peroveri/em-refactor 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-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_cmd v0.12.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cf55131b84fe3f29b31b4eaad7e0b1c74d3f6534e1016e36c62b8481c282ffb
[INFO] running `Command { std: "docker" "start" "-a" "1cf55131b84fe3f29b31b4eaad7e0b1c74d3f6534e1016e36c62b8481c282ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cf55131b84fe3f29b31b4eaad7e0b1c74d3f6534e1016e36c62b8481c282ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf55131b84fe3f29b31b4eaad7e0b1c74d3f6534e1016e36c62b8481c282ffb", kill_on_drop: false }`
[INFO] [stdout] 1cf55131b84fe3f29b31b4eaad7e0b1c74d3f6534e1016e36c62b8481c282ffb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca4ca0720dcbf7d7117f209acf1206077598cf73d64fbfbd5e94cfe79e300213
[INFO] running `Command { std: "docker" "start" "-a" "ca4ca0720dcbf7d7117f209acf1206077598cf73d64fbfbd5e94cfe79e300213", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking if_chain v1.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking em-refactor-lib-types v0.1.0 (/opt/rustwide/workdir/em-refactor-lib-types)
[INFO] [stderr]  Documenting em-refactor-lib-types v0.1.0 (/opt/rustwide/workdir/em-refactor-lib-types)
[INFO] [stderr]     Checking em-refactor-lib v0.1.0 (/opt/rustwide/workdir/em-refactor-lib)
[INFO] [stderr]  Documenting em-refactor-experiments v0.1.0 (/opt/rustwide/workdir/em-refactor-experiments)
[INFO] [stderr]  Documenting em-refactor-lib v0.1.0 (/opt/rustwide/workdir/em-refactor-lib)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_ast;
[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_ast_pretty`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate rustc_ast_pretty;
[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_driver`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate rustc_driver;
[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_errors`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate rustc_errors;
[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_hir`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rustc_hir;
[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_hir_pretty`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate rustc_hir_pretty;
[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_infer`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate rustc_infer;
[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_interface`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | extern crate rustc_interface;
[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_middle`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | extern crate rustc_middle;
[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_span`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate rustc_span;
[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_session`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | extern crate rustc_session;
[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_typeck`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate rustc_typeck;
[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[E0106]: missing lifetime specifier
[INFO] [stdout]   --> em-refactor-lib/src/refactorings/visitors/struct_def_field_collector.rs:32:58
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn collect_field(tcx: TyCtxt, span: Span) -> Option<(&StructField, usize)> {
[INFO] [stdout]    |                                                          ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn collect_field(tcx: TyCtxt, span: Span) -> Option<(&'static StructField, usize)> {
[INFO] [stdout]    |                                                           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rustc_private)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rustc_ast;
[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_ast_pretty`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate rustc_ast_pretty;
[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_driver`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate rustc_driver;
[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_errors`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate rustc_errors;
[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_hir`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rustc_hir;
[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_hir_pretty`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate rustc_hir_pretty;
[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_infer`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate rustc_infer;
[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_interface`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | extern crate rustc_interface;
[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_middle`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | extern crate rustc_middle;
[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_span`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate rustc_span;
[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_session`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | extern crate rustc_session;
[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_typeck`
[INFO] [stdout]   --> em-refactor-lib/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate rustc_typeck;
[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[E0106]: missing lifetime specifier
[INFO] [stdout]   --> em-refactor-lib/src/refactorings/visitors/struct_def_field_collector.rs:32:58
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn collect_field(tcx: TyCtxt, span: Span) -> Option<(&StructField, usize)> {
[INFO] [stdout]    |                                                          ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn collect_field(tcx: TyCtxt, span: Span) -> Option<(&'static StructField, usize)> {
[INFO] [stdout]    |                                                           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rustc_private)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `em-refactor-lib` (lib) due to 15 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0106, E0463, E0554.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0463, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `em-refactor-lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name em_refactor_lib em-refactor-lib/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=372d9980fd6db31f -L dependency=/opt/rustwide/target/debug/deps --extern em_refactor_lib_types=/opt/rustwide/target/debug/deps/libem_refactor_lib_types-4bed669a2ee8aeff.rmeta --extern if_chain=/opt/rustwide/target/debug/deps/libif_chain-f264dcb0893f680a.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-8d08fdac2c4c518b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-41892312b1d3faba.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-05a6e47efc1ea70f.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ca4ca0720dcbf7d7117f209acf1206077598cf73d64fbfbd5e94cfe79e300213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4ca0720dcbf7d7117f209acf1206077598cf73d64fbfbd5e94cfe79e300213", kill_on_drop: false }`
[INFO] [stdout] ca4ca0720dcbf7d7117f209acf1206077598cf73d64fbfbd5e94cfe79e300213
