[INFO] cloning repository https://github.com/zackyvt/jack-compiler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zackyvt/jack-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzackyvt%2Fjack-compiler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzackyvt%2Fjack-compiler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9e2dc8e9cc676818c3f5a20f070c4948565c5eeb [INFO] building zackyvt/jack-compiler against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzackyvt%2Fjack-compiler" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zackyvt/jack-compiler on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/zackyvt/jack-compiler [INFO] finished tweaking git repo https://github.com/zackyvt/jack-compiler [INFO] tweaked toml for git repo https://github.com/zackyvt/jack-compiler written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/zackyvt/jack-compiler 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded trace v0.1.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b90f0f38285db20bde19f78f58bfef002c6553172afa017bb02e9d1cbb7ec020 [INFO] running `Command { std: "docker" "start" "-a" "b90f0f38285db20bde19f78f58bfef002c6553172afa017bb02e9d1cbb7ec020", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b90f0f38285db20bde19f78f58bfef002c6553172afa017bb02e9d1cbb7ec020", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b90f0f38285db20bde19f78f58bfef002c6553172afa017bb02e9d1cbb7ec020", kill_on_drop: false }` [INFO] [stdout] b90f0f38285db20bde19f78f58bfef002c6553172afa017bb02e9d1cbb7ec020 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 488a73cac208b0e78220e76a47e3c5d3032d7b9a52c945e3fd76e6dcbfb04c54 [INFO] running `Command { std: "docker" "start" "-a" "488a73cac208b0e78220e76a47e3c5d3032d7b9a52c945e3fd76e6dcbfb04c54", kill_on_drop: false }` [INFO] [stderr] Compiling jack_parser v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/codegen/expressions.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `expressions::*` [INFO] [stdout] --> src/codegen/mod.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | pub use expressions::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/codewriter.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `structures::*` [INFO] [stdout] --> src/objects/mod.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use structures::*; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/codegen/expressions.rs:57:27 [INFO] [stdout] | [INFO] [stdout] 57 | Token::Identifier(name) => "varname".to_string(), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `class_name` [INFO] [stdout] --> src/utils/symbol_table.rs:181:9 [INFO] [stdout] | [INFO] [stdout] 181 | let class_name = { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_class_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `expression_list` is never used [INFO] [stdout] --> src/codegen/expressions.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn expression_list( [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `ArgumentVar` and `LocalVar` are never constructed [INFO] [stdout] --> src/utils/symbol_table.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | pub enum SymbolKind { [INFO] [stdout] | ---------- variants in this enum [INFO] [stdout] ... [INFO] [stdout] 8 | ArgumentVar, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 9 | LocalVar, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SymbolKind` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `class` and `literal` are never used [INFO] [stdout] --> src/utils/symbol_table.rs:40:12 [INFO] [stdout] | [INFO] [stdout] 39 | impl<'a> Symbol<'a> { [INFO] [stdout] | ------------------- methods in this implementation [INFO] [stdout] 40 | pub fn class(&self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn literal(&self) -> String { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `parent` is never read [INFO] [stdout] --> src/utils/symbol_table.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 62 | pub struct SymbolTable<'a> { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 63 | parent: Option<&'a SymbolTable<'a>>, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:96:12 [INFO] [stdout] | [INFO] [stdout] 67 | impl<'a> SymbolTable<'a> { [INFO] [stdout] | ------------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 96 | pub fn get(&self, symbol_name: &str) -> Result<&Symbol<'_>, String> { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parameter_symbols` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:200:4 [INFO] [stdout] | [INFO] [stdout] 200 | fn parameter_symbols(parameter_list: &Grouping) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `var_dec_symbols` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:228:4 [INFO] [stdout] | [INFO] [stdout] 228 | fn var_dec_symbols(var_dec: &Grouping) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_subroutine_symbol_table` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:254:4 [INFO] [stdout] | [INFO] [stdout] 254 | fn create_subroutine_symbol_table( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/utils/symbol_table.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | writeln!(f, "Symbol Table"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | codewrite(&class_grouping); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 13 | let _ = codewrite(&class_grouping); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.97s [INFO] running `Command { std: "docker" "inspect" "488a73cac208b0e78220e76a47e3c5d3032d7b9a52c945e3fd76e6dcbfb04c54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "488a73cac208b0e78220e76a47e3c5d3032d7b9a52c945e3fd76e6dcbfb04c54", kill_on_drop: false }` [INFO] [stdout] 488a73cac208b0e78220e76a47e3c5d3032d7b9a52c945e3fd76e6dcbfb04c54 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5a608376168519d4a1d6810c5f670e96a7d2dd4177b176c2b2725ae71d030b44 [INFO] running `Command { std: "docker" "start" "-a" "5a608376168519d4a1d6810c5f670e96a7d2dd4177b176c2b2725ae71d030b44", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.49 [INFO] [stderr] Compiling unicode-ident v1.0.6 [INFO] [stderr] Compiling quote v1.0.23 [INFO] [stderr] Compiling syn v1.0.107 [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/codegen/expressions.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `expressions::*` [INFO] [stdout] --> src/codegen/mod.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | pub use expressions::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/codewriter.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `structures::*` [INFO] [stdout] --> src/objects/mod.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use structures::*; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/codegen/expressions.rs:57:27 [INFO] [stdout] | [INFO] [stdout] 57 | Token::Identifier(name) => "varname".to_string(), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `class_name` [INFO] [stdout] --> src/utils/symbol_table.rs:181:9 [INFO] [stdout] | [INFO] [stdout] 181 | let class_name = { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_class_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `expression_list` is never used [INFO] [stdout] --> src/codegen/expressions.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn expression_list( [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `ArgumentVar` and `LocalVar` are never constructed [INFO] [stdout] --> src/utils/symbol_table.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | pub enum SymbolKind { [INFO] [stdout] | ---------- variants in this enum [INFO] [stdout] ... [INFO] [stdout] 8 | ArgumentVar, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 9 | LocalVar, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SymbolKind` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `class` and `literal` are never used [INFO] [stdout] --> src/utils/symbol_table.rs:40:12 [INFO] [stdout] | [INFO] [stdout] 39 | impl<'a> Symbol<'a> { [INFO] [stdout] | ------------------- methods in this implementation [INFO] [stdout] 40 | pub fn class(&self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 49 | pub fn literal(&self) -> String { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `parent` is never read [INFO] [stdout] --> src/utils/symbol_table.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 62 | pub struct SymbolTable<'a> { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 63 | parent: Option<&'a SymbolTable<'a>>, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:96:12 [INFO] [stdout] | [INFO] [stdout] 67 | impl<'a> SymbolTable<'a> { [INFO] [stdout] | ------------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 96 | pub fn get(&self, symbol_name: &str) -> Result<&Symbol<'_>, String> { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parameter_symbols` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:200:4 [INFO] [stdout] | [INFO] [stdout] 200 | fn parameter_symbols(parameter_list: &Grouping) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `var_dec_symbols` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:228:4 [INFO] [stdout] | [INFO] [stdout] 228 | fn var_dec_symbols(var_dec: &Grouping) -> Result, String> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_subroutine_symbol_table` is never used [INFO] [stdout] --> src/utils/symbol_table.rs:254:4 [INFO] [stdout] | [INFO] [stdout] 254 | fn create_subroutine_symbol_table( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/utils/symbol_table.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | writeln!(f, "Symbol Table"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | codewrite(&class_grouping); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 13 | let _ = codewrite(&class_grouping); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/src/lib.rs:92:30 [INFO] [stdout] | [INFO] [stdout] 92 | feature(proc_macro_span, proc_macro_span_shrink) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "5a608376168519d4a1d6810c5f670e96a7d2dd4177b176c2b2725ae71d030b44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a608376168519d4a1d6810c5f670e96a7d2dd4177b176c2b2725ae71d030b44", kill_on_drop: false }` [INFO] [stdout] 5a608376168519d4a1d6810c5f670e96a7d2dd4177b176c2b2725ae71d030b44