[INFO] updating cached repository https://github.com/NicholasLYang/saber [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] [stderr] From https://github.com/NicholasLYang/saber [INFO] [stderr] 8e7757c..c7dc9f4 master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] c7dc9f4baa6454056bbe57bf0706f9182bf0961a [INFO] checking NicholasLYang/saber against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicholasLYang%2Fsaber" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/NicholasLYang/saber on toolchain b61e69433951e31f7bd746e22f516a48ad41623b [INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/NicholasLYang/saber [INFO] finished tweaking git repo https://github.com/NicholasLYang/saber [INFO] tweaked toml for git repo https://github.com/NicholasLYang/saber written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/NicholasLYang/saber already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] 103fa8171269ce2cd5da93be5361d5c5cea77d4e290a0fe54af8f1165b6c91bf [INFO] running `"docker" "start" "-a" "103fa8171269ce2cd5da93be5361d5c5cea77d4e290a0fe54af8f1165b6c91bf"` [INFO] [stderr] Compiling proc-macro2 v0.4.13 [INFO] [stderr] Compiling cc v1.0.22 [INFO] [stderr] Checking strum v0.13.0 [INFO] [stderr] Checking itertools v0.8.0 [INFO] [stderr] Compiling im v13.0.0 [INFO] [stderr] Compiling quote v0.6.8 [INFO] [stderr] Compiling backtrace-sys v0.1.24 [INFO] [stderr] Compiling syn v0.15.15 [INFO] [stderr] Checking backtrace v0.3.9 [INFO] [stderr] Compiling synstructure v0.10.1 [INFO] [stderr] Compiling strum_macros v0.13.0 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking saber v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `Name` [INFO] [stderr] --> src/ast.rs:166:27 [INFO] [stderr] | [INFO] [stderr] 166 | Type::Var(Name) => "unknown".into(), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_Name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `env` [INFO] [stderr] --> src/code_generator.rs:47:21 [INFO] [stderr] | [INFO] [stderr] 47 | env, [INFO] [stderr] | ^^^ help: try ignoring the field: `env: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `params` [INFO] [stderr] --> src/code_generator.rs:48:21 [INFO] [stderr] | [INFO] [stderr] 48 | params, [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `params: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `type_` [INFO] [stderr] --> src/code_generator.rs:155:41 [INFO] [stderr] | [INFO] [stderr] 155 | TypedExpr::Primary { value, type_ } => Ok(vec![self.generate_primary(value)?]), [INFO] [stderr] | ^^^^^ help: try ignoring the field: `type_: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `bytecode` [INFO] [stderr] --> src/emitter.rs:34:9 [INFO] [stderr] | [INFO] [stderr] 34 | let bytecode = match op_code { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_bytecode` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `start` [INFO] [stderr] --> src/parser.rs:345:19 [INFO] [stderr] | [INFO] [stderr] 345 | Some((start, Token::LParen, end)) => { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_start` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `end` [INFO] [stderr] --> src/parser.rs:345:41 [INFO] [stderr] | [INFO] [stderr] 345 | Some((start, Token::LParen, end)) => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_end` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `start` [INFO] [stderr] --> src/parser.rs:357:19 [INFO] [stderr] | [INFO] [stderr] 357 | Some((start, Token::Ident(name), end)) => Ok(Expr::Var { name }), [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_start` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `end` [INFO] [stderr] --> src/parser.rs:357:46 [INFO] [stderr] | [INFO] [stderr] 357 | Some((start, Token::Ident(name), end)) => Ok(Expr::Var { name }), [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_end` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/typechecker.rs:191:21 [INFO] [stderr] | [INFO] [stderr] 191 | Pat::Id(name, Some(type_sig)) => self.lookup_type_sig(&type_sig), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `param_type` [INFO] [stderr] --> src/typechecker.rs:275:21 [INFO] [stderr] | [INFO] [stderr] 275 | let param_type = self.infer_pat(¶ms)?; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_param_type` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `params_type` [INFO] [stderr] --> src/typechecker.rs:286:21 [INFO] [stderr] | [INFO] [stderr] 286 | let params_type = self.retrieve_params(¶ms); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_params_type` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:313:17 [INFO] [stderr] | [INFO] [stderr] 313 | self.ctx.insert(name.clone(), type_var.clone()); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:400:32 [INFO] [stderr] | [INFO] [stderr] 400 | let var_type = self.ctx.remove(name); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:403:21 [INFO] [stderr] | [INFO] [stderr] 403 | self.ctx.insert(name.to_string(), t1); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:406:21 [INFO] [stderr] | [INFO] [stderr] 406 | self.ctx.insert(name.clone(), Arc::new(t2.clone())); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0596`. [INFO] [stderr] error: could not compile `saber`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: unused variable: `Name` [INFO] [stderr] --> src/ast.rs:166:27 [INFO] [stderr] | [INFO] [stderr] 166 | Type::Var(Name) => "unknown".into(), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_Name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `env` [INFO] [stderr] --> src/code_generator.rs:47:21 [INFO] [stderr] | [INFO] [stderr] 47 | env, [INFO] [stderr] | ^^^ help: try ignoring the field: `env: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `params` [INFO] [stderr] --> src/code_generator.rs:48:21 [INFO] [stderr] | [INFO] [stderr] 48 | params, [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `params: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `type_` [INFO] [stderr] --> src/code_generator.rs:155:41 [INFO] [stderr] | [INFO] [stderr] 155 | TypedExpr::Primary { value, type_ } => Ok(vec![self.generate_primary(value)?]), [INFO] [stderr] | ^^^^^ help: try ignoring the field: `type_: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `bytecode` [INFO] [stderr] --> src/emitter.rs:34:9 [INFO] [stderr] | [INFO] [stderr] 34 | let bytecode = match op_code { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_bytecode` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `start` [INFO] [stderr] --> src/parser.rs:345:19 [INFO] [stderr] | [INFO] [stderr] 345 | Some((start, Token::LParen, end)) => { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_start` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `end` [INFO] [stderr] --> src/parser.rs:345:41 [INFO] [stderr] | [INFO] [stderr] 345 | Some((start, Token::LParen, end)) => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_end` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `start` [INFO] [stderr] --> src/parser.rs:357:19 [INFO] [stderr] | [INFO] [stderr] 357 | Some((start, Token::Ident(name), end)) => Ok(Expr::Var { name }), [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_start` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `end` [INFO] [stderr] --> src/parser.rs:357:46 [INFO] [stderr] | [INFO] [stderr] 357 | Some((start, Token::Ident(name), end)) => Ok(Expr::Var { name }), [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_end` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/typechecker.rs:191:21 [INFO] [stderr] | [INFO] [stderr] 191 | Pat::Id(name, Some(type_sig)) => self.lookup_type_sig(&type_sig), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `param_type` [INFO] [stderr] --> src/typechecker.rs:275:21 [INFO] [stderr] | [INFO] [stderr] 275 | let param_type = self.infer_pat(¶ms)?; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_param_type` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `params_type` [INFO] [stderr] --> src/typechecker.rs:286:21 [INFO] [stderr] | [INFO] [stderr] 286 | let params_type = self.retrieve_params(¶ms); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_params_type` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:313:17 [INFO] [stderr] | [INFO] [stderr] 313 | self.ctx.insert(name.clone(), type_var.clone()); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:400:32 [INFO] [stderr] | [INFO] [stderr] 400 | let var_type = self.ctx.remove(name); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:403:21 [INFO] [stderr] | [INFO] [stderr] 403 | self.ctx.insert(name.to_string(), t1); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow data in an `Arc` as mutable [INFO] [stderr] --> src/typechecker.rs:406:21 [INFO] [stderr] | [INFO] [stderr] 406 | self.ctx.insert(name.clone(), Arc::new(t2.clone())); [INFO] [stderr] | ^^^^^^^^ cannot borrow as mutable [INFO] [stderr] | [INFO] [stderr] = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `std::sync::Arc>>` [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0596`. [INFO] [stderr] error: could not compile `saber`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "103fa8171269ce2cd5da93be5361d5c5cea77d4e290a0fe54af8f1165b6c91bf"` [INFO] running `"docker" "rm" "-f" "103fa8171269ce2cd5da93be5361d5c5cea77d4e290a0fe54af8f1165b6c91bf"` [INFO] [stdout] 103fa8171269ce2cd5da93be5361d5c5cea77d4e290a0fe54af8f1165b6c91bf