[INFO] cloning repository https://github.com/zesterer/bread [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zesterer/bread" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzesterer%2Fbread", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzesterer%2Fbread'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9f22046e9bd8a7d28eba68e5f67076346ba9ec06 [INFO] testing zesterer/bread against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzesterer%2Fbread" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zesterer/bread on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/zesterer/bread [INFO] finished tweaking git repo https://github.com/zesterer/bread [INFO] tweaked toml for git repo https://github.com/zesterer/bread written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/zesterer/bread already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/zesterer/chumsky.git` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ariadne v0.1.3 [INFO] [stderr] Downloaded internment v0.5.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5796a6060ea0d95f2d441cdc7a147961d13cb1fe474a9b18a1659e65610036cb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "5796a6060ea0d95f2d441cdc7a147961d13cb1fe474a9b18a1659e65610036cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5796a6060ea0d95f2d441cdc7a147961d13cb1fe474a9b18a1659e65610036cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5796a6060ea0d95f2d441cdc7a147961d13cb1fe474a9b18a1659e65610036cb", kill_on_drop: false }` [INFO] [stdout] 5796a6060ea0d95f2d441cdc7a147961d13cb1fe474a9b18a1659e65610036cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b9d073a617c7251b57d8034832c0e102f6d59a065b1bf59e69e8b882b7a6cdd8 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b9d073a617c7251b57d8034832c0e102f6d59a065b1bf59e69e8b882b7a6cdd8", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.105 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Compiling tiny-keccak v2.0.2 [INFO] [stderr] Compiling parking_lot_core v0.8.5 [INFO] [stderr] Compiling proc-macro2 v1.0.32 [INFO] [stderr] Compiling smallvec v1.7.0 [INFO] [stderr] Compiling ahash v0.4.7 [INFO] [stderr] Compiling once_cell v1.8.0 [INFO] [stderr] Compiling syn v1.0.81 [INFO] [stderr] Compiling unicode-width v0.1.9 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling instant v0.1.12 [INFO] [stderr] Compiling ahash v0.7.6 [INFO] [stderr] Compiling lock_api v0.4.5 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling ariadne v0.1.3 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling hashbrown v0.9.1 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling quote v1.0.10 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling parking_lot v0.11.2 [INFO] [stderr] Compiling const-random-macro v0.1.13 [INFO] [stderr] Compiling hashbrown v0.11.2 [INFO] [stderr] Compiling internment v0.5.4 [INFO] [stderr] Compiling const-random v0.1.13 [INFO] [stderr] Compiling ahash v0.3.8 [INFO] [stderr] Compiling chumsky v0.5.0 (https://github.com/zesterer/chumsky.git#549341fa) [INFO] [stderr] Compiling tao_syntax v0.1.0 (/opt/rustwide/workdir/syntax) [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stdout] warning: unused variable: `span` [INFO] [stdout] --> syntax/src/parse.rs:502:36 [INFO] [stdout] | [INFO] [stdout] 502 | Chain::Apply(None, span) => SrcNode::new(ast::Expr::Error, expr.span()), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tao_analysis v0.1.0 (/opt/rustwide/workdir/analysis) [INFO] [stdout] warning: unused import: `HashSet` [INFO] [stdout] --> analysis/src/lib.rs:33:26 [INFO] [stdout] | [INFO] [stdout] 33 | use hashbrown::{HashMap, HashSet}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling structopt v0.3.25 [INFO] [stdout] warning: unused variable: `attr` [INFO] [stdout] --> analysis/src/context.rs:121:14 [INFO] [stdout] | [INFO] [stdout] 121 | for (attr, def) in defs { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> analysis/src/context.rs:164:32 [INFO] [stdout] | [INFO] [stdout] 164 | Ty::Data(data, args) => if already_seen.contains(&data) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `span` [INFO] [stdout] --> analysis/src/data.rs:88:47 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn define_data(&mut self, id: DataId, span: Span, data: Data) -> Result<(), Vec> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> analysis/src/infer.rs:222:54 [INFO] [stdout] | [INFO] [stdout] 222 | (TyInfo::Gen(a, a_scope, _), TyInfo::Gen(b, b_scope, _)) if a == a && a_scope == b_scope => Ok(()), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> analysis/src/infer.rs:244:25 [INFO] [stdout] | [INFO] [stdout] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `origin` [INFO] [stdout] --> analysis/src/infer.rs:244:31 [INFO] [stdout] | [INFO] [stdout] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:218:46 [INFO] [stdout] | [INFO] [stdout] 218 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:217:25 [INFO] [stdout] | [INFO] [stdout] 217 | let data_gen_scope = data.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:275:53 [INFO] [stdout] | [INFO] [stdout] 275 | let get_gen = |index: usize, _, ctx: &Context| generic_tys[index].1; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:511:46 [INFO] [stdout] | [INFO] [stdout] 511 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `def_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:273:25 [INFO] [stdout] | [INFO] [stdout] 273 | let def_gen_scope = def.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:510:25 [INFO] [stdout] | [INFO] [stdout] 510 | let data_gen_scope = data.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `alias_lut` [INFO] [stdout] --> analysis/src/data.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | alias_lut: HashMap, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `follow` [INFO] [stdout] --> analysis/src/infer.rs:75:8 [INFO] [stdout] | [INFO] [stdout] 75 | fn follow(&self, ty: TyVar) -> TyVar { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `with` [INFO] [stdout] --> analysis/src/lower.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | fn with(&self, name: SrcNode, ty: TyVar) -> Scope<'_> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tao_middle v0.1.0 (/opt/rustwide/workdir/middle) [INFO] [stdout] warning: unused import: `ast::BinaryOp::*` [INFO] [stdout] --> middle/src/lower.rs:143:21 [INFO] [stdout] | [INFO] [stdout] 143 | use ast::BinaryOp::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `TyNode` [INFO] [stdout] --> middle/src/lib.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | TyNode, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `Not` is named the same as one of the variants of the type `UnaryOp` [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: to match on the variant, qualify the path: `UnaryOp::Not` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bindings_with_variant_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> middle/src/error.rs:12:50 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn write>(self, ctx: &Context, cache: C, writer: impl Write) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> middle/src/repr.rs:44:29 [INFO] [stdout] | [INFO] [stdout] 44 | Entry::Occupied(data) => false, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> middle/src/lower.rs:68:22 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hir` [INFO] [stdout] --> middle/src/lower.rs:68:41 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hir` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `gen_tys` [INFO] [stdout] --> middle/src/lower.rs:68:59 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gen_tys` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `Not` [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_Not` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> middle/src/lower.rs:169:42 [INFO] [stdout] | [INFO] [stdout] 169 | (Join, List(x), List(y)) => mir::Intrinsic::Join(x.to_mir(ctx, hir, gen_tys)), // Assume x = y [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `captures` [INFO] [stdout] --> middle/src/opt/const_fold.rs:181:28 [INFO] [stdout] | [INFO] [stdout] 181 | Expr::Func(captures, arg, body) => { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variant` [INFO] [stdout] --> middle/src/opt/const_fold.rs:190:31 [INFO] [stdout] | [INFO] [stdout] 190 | Expr::Variant(variant, inner) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variant` [INFO] [stdout] --> middle/src/opt/const_fold.rs:197:44 [INFO] [stdout] | [INFO] [stdout] 197 | Expr::AccessVariant(inner, variant) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `field` [INFO] [stdout] --> middle/src/opt/flatten_single_field.rs:30:41 [INFO] [stdout] | [INFO] [stdout] 30 | Expr::Access(tuple, field) => if let Repr::Tuple(fields) = tuple.meta() { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_field` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `op` [INFO] [stdout] --> middle/src/opt/remove_unused_bindings.rs:25:33 [INFO] [stdout] | [INFO] [stdout] 25 | Expr::Intrinsic(op, args) => { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_op` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Not` should have a snake case name [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: convert the identifier to snake case: `not` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tao_vm v0.1.0 (/opt/rustwide/workdir/vm) [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tail` [INFO] [stdout] --> vm/src/lower.rs:57:29 [INFO] [stdout] | [INFO] [stdout] 57 | if let Some(tail) = tail.as_ref() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tail` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tao v0.1.0 (/opt/rustwide/workdir/compiler) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0170`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 09s [INFO] running `Command { std: "docker" "inspect" "b9d073a617c7251b57d8034832c0e102f6d59a065b1bf59e69e8b882b7a6cdd8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9d073a617c7251b57d8034832c0e102f6d59a065b1bf59e69e8b882b7a6cdd8", kill_on_drop: false }` [INFO] [stdout] b9d073a617c7251b57d8034832c0e102f6d59a065b1bf59e69e8b882b7a6cdd8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3881110ee7c62cd3539c1e27ea3fcd46c220c367b32413b141b403bd15a67420 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "3881110ee7c62cd3539c1e27ea3fcd46c220c367b32413b141b403bd15a67420", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling nibble_vec v0.1.0 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling dirs-sys-next v0.1.2 [INFO] [stderr] Compiling fd-lock v3.0.0 [INFO] [stdout] warning: unused variable: `span` [INFO] [stdout] --> syntax/src/parse.rs:502:36 [INFO] [stdout] | [INFO] [stdout] 502 | Chain::Apply(None, span) => SrcNode::new(ast::Expr::Error, expr.span()), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `HashSet` [INFO] [stdout] --> analysis/src/lib.rs:33:26 [INFO] [stdout] | [INFO] [stdout] 33 | use hashbrown::{HashMap, HashSet}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `attr` [INFO] [stdout] --> analysis/src/context.rs:121:14 [INFO] [stdout] | [INFO] [stdout] 121 | for (attr, def) in defs { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> analysis/src/context.rs:164:32 [INFO] [stdout] | [INFO] [stdout] 164 | Ty::Data(data, args) => if already_seen.contains(&data) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `span` [INFO] [stdout] --> analysis/src/data.rs:88:47 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn define_data(&mut self, id: DataId, span: Span, data: Data) -> Result<(), Vec> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> analysis/src/infer.rs:222:54 [INFO] [stdout] | [INFO] [stdout] 222 | (TyInfo::Gen(a, a_scope, _), TyInfo::Gen(b, b_scope, _)) if a == a && a_scope == b_scope => Ok(()), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> analysis/src/infer.rs:244:25 [INFO] [stdout] | [INFO] [stdout] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `origin` [INFO] [stdout] --> analysis/src/infer.rs:244:31 [INFO] [stdout] | [INFO] [stdout] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:218:46 [INFO] [stdout] | [INFO] [stdout] 218 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:217:25 [INFO] [stdout] | [INFO] [stdout] 217 | let data_gen_scope = data.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:275:53 [INFO] [stdout] | [INFO] [stdout] 275 | let get_gen = |index: usize, _, ctx: &Context| generic_tys[index].1; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:511:46 [INFO] [stdout] | [INFO] [stdout] 511 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `def_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:273:25 [INFO] [stdout] | [INFO] [stdout] 273 | let def_gen_scope = def.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:510:25 [INFO] [stdout] | [INFO] [stdout] 510 | let data_gen_scope = data.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `alias_lut` [INFO] [stdout] --> analysis/src/data.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | alias_lut: HashMap, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `follow` [INFO] [stdout] --> analysis/src/infer.rs:75:8 [INFO] [stdout] | [INFO] [stdout] 75 | fn follow(&self, ty: TyVar) -> TyVar { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `with` [INFO] [stdout] --> analysis/src/lower.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | fn with(&self, name: SrcNode, ty: TyVar) -> Scope<'_> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ast::BinaryOp::*` [INFO] [stdout] --> middle/src/lower.rs:143:21 [INFO] [stdout] | [INFO] [stdout] 143 | use ast::BinaryOp::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `TyNode` [INFO] [stdout] --> middle/src/lib.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | TyNode, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `Not` is named the same as one of the variants of the type `UnaryOp` [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: to match on the variant, qualify the path: `UnaryOp::Not` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bindings_with_variant_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> middle/src/error.rs:12:50 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn write>(self, ctx: &Context, cache: C, writer: impl Write) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> middle/src/repr.rs:44:29 [INFO] [stdout] | [INFO] [stdout] 44 | Entry::Occupied(data) => false, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> middle/src/lower.rs:68:22 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hir` [INFO] [stdout] --> middle/src/lower.rs:68:41 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hir` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `gen_tys` [INFO] [stdout] --> middle/src/lower.rs:68:59 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gen_tys` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tao_vm v0.1.0 (/opt/rustwide/workdir/vm) [INFO] [stdout] warning: unused variable: `Not` [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_Not` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tao v0.1.0 (/opt/rustwide/workdir/compiler) [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> middle/src/lower.rs:169:42 [INFO] [stdout] | [INFO] [stdout] 169 | (Join, List(x), List(y)) => mir::Intrinsic::Join(x.to_mir(ctx, hir, gen_tys)), // Assume x = y [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `captures` [INFO] [stdout] --> middle/src/opt/const_fold.rs:181:28 [INFO] [stdout] | [INFO] [stdout] 181 | Expr::Func(captures, arg, body) => { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variant` [INFO] [stdout] --> middle/src/opt/const_fold.rs:190:31 [INFO] [stdout] | [INFO] [stdout] 190 | Expr::Variant(variant, inner) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variant` [INFO] [stdout] --> middle/src/opt/const_fold.rs:197:44 [INFO] [stdout] | [INFO] [stdout] 197 | Expr::AccessVariant(inner, variant) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `field` [INFO] [stdout] --> middle/src/opt/flatten_single_field.rs:30:41 [INFO] [stdout] | [INFO] [stdout] 30 | Expr::Access(tuple, field) => if let Repr::Tuple(fields) = tuple.meta() { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_field` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `op` [INFO] [stdout] --> middle/src/opt/remove_unused_bindings.rs:25:33 [INFO] [stdout] | [INFO] [stdout] 25 | Expr::Intrinsic(op, args) => { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_op` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Not` should have a snake case name [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: convert the identifier to snake case: `not` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0170`. [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tail` [INFO] [stdout] --> vm/src/lower.rs:57:29 [INFO] [stdout] | [INFO] [stdout] 57 | if let Some(tail) = tail.as_ref() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tail` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling dirs-next v2.0.0 [INFO] [stderr] Compiling radix_trie v0.2.1 [INFO] [stdout] warning: unused variable: `tail` [INFO] [stdout] --> vm/src/lower.rs:57:29 [INFO] [stdout] | [INFO] [stdout] 57 | if let Some(tail) = tail.as_ref() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tail` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling nix v0.22.2 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rustyline v9.0.0 [INFO] [stderr] Compiling tao_syntax v0.1.0 (/opt/rustwide/workdir/syntax) [INFO] [stderr] Compiling tao_analysis v0.1.0 (/opt/rustwide/workdir/analysis) [INFO] [stderr] Compiling tao_middle v0.1.0 (/opt/rustwide/workdir/middle) [INFO] [stdout] warning: unused import: `HashSet` [INFO] [stdout] --> analysis/src/lib.rs:33:26 [INFO] [stdout] | [INFO] [stdout] 33 | use hashbrown::{HashMap, HashSet}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ast::BinaryOp::*` [INFO] [stdout] --> middle/src/lower.rs:143:21 [INFO] [stdout] | [INFO] [stdout] 143 | use ast::BinaryOp::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `TyNode` [INFO] [stdout] --> middle/src/lib.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | TyNode, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `Not` is named the same as one of the variants of the type `UnaryOp` [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: to match on the variant, qualify the path: `UnaryOp::Not` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bindings_with_variant_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> middle/src/error.rs:12:50 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn write>(self, ctx: &Context, cache: C, writer: impl Write) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> middle/src/repr.rs:44:29 [INFO] [stdout] | [INFO] [stdout] 44 | Entry::Occupied(data) => false, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> middle/src/lower.rs:68:22 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hir` [INFO] [stdout] --> middle/src/lower.rs:68:41 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hir` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `gen_tys` [INFO] [stdout] --> middle/src/lower.rs:68:59 [INFO] [stdout] | [INFO] [stdout] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gen_tys` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `Not` [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_Not` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> middle/src/lower.rs:169:42 [INFO] [stdout] | [INFO] [stdout] 169 | (Join, List(x), List(y)) => mir::Intrinsic::Join(x.to_mir(ctx, hir, gen_tys)), // Assume x = y [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `captures` [INFO] [stdout] --> middle/src/opt/const_fold.rs:181:28 [INFO] [stdout] | [INFO] [stdout] 181 | Expr::Func(captures, arg, body) => { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variant` [INFO] [stdout] --> middle/src/opt/const_fold.rs:190:31 [INFO] [stdout] | [INFO] [stdout] 190 | Expr::Variant(variant, inner) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `variant` [INFO] [stdout] --> middle/src/opt/const_fold.rs:197:44 [INFO] [stdout] | [INFO] [stdout] 197 | Expr::AccessVariant(inner, variant) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `field` [INFO] [stdout] --> middle/src/opt/flatten_single_field.rs:30:41 [INFO] [stdout] | [INFO] [stdout] 30 | Expr::Access(tuple, field) => if let Repr::Tuple(fields) = tuple.meta() { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_field` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `op` [INFO] [stdout] --> middle/src/opt/remove_unused_bindings.rs:25:33 [INFO] [stdout] | [INFO] [stdout] 25 | Expr::Intrinsic(op, args) => { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_op` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `attr` [INFO] [stdout] --> analysis/src/context.rs:121:14 [INFO] [stdout] | [INFO] [stdout] 121 | for (attr, def) in defs { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> analysis/src/context.rs:164:32 [INFO] [stdout] | [INFO] [stdout] 164 | Ty::Data(data, args) => if already_seen.contains(&data) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `span` [INFO] [stdout] --> analysis/src/data.rs:88:47 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn define_data(&mut self, id: DataId, span: Span, data: Data) -> Result<(), Vec> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> analysis/src/infer.rs:222:54 [INFO] [stdout] | [INFO] [stdout] 222 | (TyInfo::Gen(a, a_scope, _), TyInfo::Gen(b, b_scope, _)) if a == a && a_scope == b_scope => Ok(()), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> analysis/src/infer.rs:244:25 [INFO] [stdout] | [INFO] [stdout] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `origin` [INFO] [stdout] --> analysis/src/infer.rs:244:31 [INFO] [stdout] | [INFO] [stdout] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:218:46 [INFO] [stdout] | [INFO] [stdout] 218 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:217:25 [INFO] [stdout] | [INFO] [stdout] 217 | let data_gen_scope = data.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:275:53 [INFO] [stdout] | [INFO] [stdout] 275 | let get_gen = |index: usize, _, ctx: &Context| generic_tys[index].1; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ctx` [INFO] [stdout] --> analysis/src/lower.rs:511:46 [INFO] [stdout] | [INFO] [stdout] 511 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `def_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:273:25 [INFO] [stdout] | [INFO] [stdout] 273 | let def_gen_scope = def.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data_gen_scope` [INFO] [stdout] --> analysis/src/lower.rs:510:25 [INFO] [stdout] | [INFO] [stdout] 510 | let data_gen_scope = data.gen_scope; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Not` should have a snake case name [INFO] [stdout] --> middle/src/lower.rs:146:22 [INFO] [stdout] | [INFO] [stdout] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stdout] | ^^^ help: convert the identifier to snake case: `not` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `alias_lut` [INFO] [stdout] --> analysis/src/data.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | alias_lut: HashMap, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `follow` [INFO] [stdout] --> analysis/src/infer.rs:75:8 [INFO] [stdout] | [INFO] [stdout] 75 | fn follow(&self, ty: TyVar) -> TyVar { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `with` [INFO] [stdout] --> analysis/src/lower.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | fn with(&self, name: SrcNode, ty: TyVar) -> Scope<'_> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0170`. [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `span` [INFO] [stdout] --> syntax/src/parse.rs:502:36 [INFO] [stdout] | [INFO] [stdout] 502 | Chain::Apply(None, span) => SrcNode::new(ast::Expr::Error, expr.span()), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 39.79s [INFO] running `Command { std: "docker" "inspect" "3881110ee7c62cd3539c1e27ea3fcd46c220c367b32413b141b403bd15a67420", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3881110ee7c62cd3539c1e27ea3fcd46c220c367b32413b141b403bd15a67420", kill_on_drop: false }` [INFO] [stdout] 3881110ee7c62cd3539c1e27ea3fcd46c220c367b32413b141b403bd15a67420 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b7d714a8b1062055c5bac933b65d5b9088644927fc858f705842a32ae5151efc [INFO] running `Command { std: "docker" "start" "-a" "b7d714a8b1062055c5bac933b65d5b9088644927fc858f705842a32ae5151efc", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused variable: `span` [INFO] [stderr] --> syntax/src/parse.rs:502:36 [INFO] [stderr] | [INFO] [stderr] 502 | Chain::Apply(None, span) => SrcNode::new(ast::Expr::Error, expr.span()), [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `tao_syntax` (lib) generated 1 warning [INFO] [stderr] warning: `tao_syntax` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] warning: unused import: `HashSet` [INFO] [stderr] --> analysis/src/lib.rs:33:26 [INFO] [stderr] | [INFO] [stderr] 33 | use hashbrown::{HashMap, HashSet}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `attr` [INFO] [stderr] --> analysis/src/context.rs:121:14 [INFO] [stderr] | [INFO] [stderr] 121 | for (attr, def) in defs { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> analysis/src/context.rs:164:32 [INFO] [stderr] | [INFO] [stderr] 164 | Ty::Data(data, args) => if already_seen.contains(&data) { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `span` [INFO] [stderr] --> analysis/src/data.rs:88:47 [INFO] [stderr] | [INFO] [stderr] 88 | pub fn define_data(&mut self, id: DataId, span: Span, data: Data) -> Result<(), Vec> { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_span` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> analysis/src/infer.rs:222:54 [INFO] [stderr] | [INFO] [stderr] 222 | (TyInfo::Gen(a, a_scope, _), TyInfo::Gen(b, b_scope, _)) if a == a && a_scope == b_scope => Ok(()), [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> analysis/src/infer.rs:244:25 [INFO] [stderr] | [INFO] [stderr] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin` [INFO] [stderr] --> analysis/src/infer.rs:244:31 [INFO] [stderr] | [INFO] [stderr] 244 | TyInfo::Gen(x, _, origin) => ty,//self.insert(span, TyInfo::Unknown(Some(origin))), [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ctx` [INFO] [stderr] --> analysis/src/lower.rs:218:46 [INFO] [stderr] | [INFO] [stderr] 218 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data_gen_scope` [INFO] [stderr] --> analysis/src/lower.rs:217:25 [INFO] [stderr] | [INFO] [stderr] 217 | let data_gen_scope = data.gen_scope; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ctx` [INFO] [stderr] --> analysis/src/lower.rs:275:53 [INFO] [stderr] | [INFO] [stderr] 275 | let get_gen = |index: usize, _, ctx: &Context| generic_tys[index].1; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ctx` [INFO] [stderr] --> analysis/src/lower.rs:511:46 [INFO] [stderr] | [INFO] [stderr] 511 | let get_gen = |index, _, ctx: &Context| generic_tys[index]; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `def_gen_scope` [INFO] [stderr] --> analysis/src/lower.rs:273:25 [INFO] [stderr] | [INFO] [stderr] 273 | let def_gen_scope = def.gen_scope; [INFO] [stderr] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_gen_scope` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data_gen_scope` [INFO] [stderr] --> analysis/src/lower.rs:510:25 [INFO] [stderr] | [INFO] [stderr] 510 | let data_gen_scope = data.gen_scope; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_gen_scope` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `alias_lut` [INFO] [stderr] --> analysis/src/data.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | alias_lut: HashMap, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `follow` [INFO] [stderr] --> analysis/src/infer.rs:75:8 [INFO] [stderr] | [INFO] [stderr] 75 | fn follow(&self, ty: TyVar) -> TyVar { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `with` [INFO] [stderr] --> analysis/src/lower.rs:24:8 [INFO] [stderr] | [INFO] [stderr] 24 | fn with(&self, name: SrcNode, ty: TyVar) -> Scope<'_> { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: `tao_analysis` (lib) generated 16 warnings [INFO] [stderr] warning: `tao_analysis` (lib test) generated 16 warnings (16 duplicates) [INFO] [stderr] warning: unused import: `ast::BinaryOp::*` [INFO] [stderr] --> middle/src/lower.rs:143:21 [INFO] [stderr] | [INFO] [stderr] 143 | use ast::BinaryOp::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `TyNode` [INFO] [stderr] --> middle/src/lib.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | TyNode, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning[E0170]: pattern binding `Not` is named the same as one of the variants of the type `UnaryOp` [INFO] [stderr] --> middle/src/lower.rs:146:22 [INFO] [stderr] | [INFO] [stderr] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stderr] | ^^^ help: to match on the variant, qualify the path: `UnaryOp::Not` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bindings_with_variant_name)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ctx` [INFO] [stderr] --> middle/src/error.rs:12:50 [INFO] [stderr] | [INFO] [stderr] 12 | pub fn write>(self, ctx: &Context, cache: C, writer: impl Write) { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data` [INFO] [stderr] --> middle/src/repr.rs:44:29 [INFO] [stderr] | [INFO] [stderr] 44 | Entry::Occupied(data) => false, [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ctx` [INFO] [stderr] --> middle/src/lower.rs:68:22 [INFO] [stderr] | [INFO] [stderr] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_ctx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `hir` [INFO] [stderr] --> middle/src/lower.rs:68:41 [INFO] [stderr] | [INFO] [stderr] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_hir` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `gen_tys` [INFO] [stderr] --> middle/src/lower.rs:68:59 [INFO] [stderr] | [INFO] [stderr] 68 | fn to_mir(&self, ctx: &mut Context, hir: &HirContext, gen_tys: &[Repr]) -> Self::Output { [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gen_tys` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Not` [INFO] [stderr] --> middle/src/lower.rs:146:22 [INFO] [stderr] | [INFO] [stderr] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_Not` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> middle/src/lower.rs:169:42 [INFO] [stderr] | [INFO] [stderr] 169 | (Join, List(x), List(y)) => mir::Intrinsic::Join(x.to_mir(ctx, hir, gen_tys)), // Assume x = y [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `captures` [INFO] [stderr] --> middle/src/opt/const_fold.rs:181:28 [INFO] [stderr] | [INFO] [stderr] 181 | Expr::Func(captures, arg, body) => { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `variant` [INFO] [stderr] --> middle/src/opt/const_fold.rs:190:31 [INFO] [stderr] | [INFO] [stderr] 190 | Expr::Variant(variant, inner) => { [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `variant` [INFO] [stderr] --> middle/src/opt/const_fold.rs:197:44 [INFO] [stderr] | [INFO] [stderr] 197 | Expr::AccessVariant(inner, variant) => { [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `field` [INFO] [stderr] --> middle/src/opt/flatten_single_field.rs:30:41 [INFO] [stderr] | [INFO] [stderr] 30 | Expr::Access(tuple, field) => if let Repr::Tuple(fields) = tuple.meta() { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_field` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `op` [INFO] [stderr] --> middle/src/opt/remove_unused_bindings.rs:25:33 [INFO] [stderr] | [INFO] [stderr] 25 | Expr::Intrinsic(op, args) => { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_op` [INFO] [stderr] [INFO] [stderr] warning: variable `Not` should have a snake case name [INFO] [stderr] --> middle/src/lower.rs:146:22 [INFO] [stderr] | [INFO] [stderr] 146 | (Not, Prim(Bool)) => mir::Intrinsic::NotBool, [INFO] [stderr] | ^^^ help: convert the identifier to snake case: `not` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0170`. [INFO] [stderr] warning: `tao_middle` (lib) generated 16 warnings [INFO] [stderr] warning: `tao_middle` (lib test) generated 16 warnings (16 duplicates) [INFO] [stderr] warning: unused variable: `tail` [INFO] [stderr] --> vm/src/lower.rs:57:29 [INFO] [stderr] | [INFO] [stderr] 57 | if let Some(tail) = tail.as_ref() { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tail` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `tao_vm` (lib) generated 1 warning [INFO] [stderr] warning: `tao_vm` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.69s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tao-385c3f81dac08727) [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tao-33252f8ccd819579) [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running tests/tester.rs (/opt/rustwide/target/debug/deps/tester-13df74e080c0742f) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test math ... ok [INFO] [stdout] test records ... ok [INFO] [stdout] test lists ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.46s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tao_analysis-8c39f62216e42a68) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tao_middle-20020a8a276558a7) [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tao_syntax-7b14b5685f3cb748) [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test token::tests::simple ... ok [INFO] [stdout] test parse::tests::simple ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tao_vm-221bf06884383688) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tao [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tao_analysis [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tao_middle [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tao_syntax [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tao_vm [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b7d714a8b1062055c5bac933b65d5b9088644927fc858f705842a32ae5151efc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b7d714a8b1062055c5bac933b65d5b9088644927fc858f705842a32ae5151efc", kill_on_drop: false }` [INFO] [stdout] b7d714a8b1062055c5bac933b65d5b9088644927fc858f705842a32ae5151efc