[INFO] cloning repository https://github.com/Phosphorus15/ruda [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Phosphorus15/ruda" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosphorus15%2Fruda", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosphorus15%2Fruda'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1634aa427e15c4eec03770c8508690618f5b882e [INFO] testing Phosphorus15/ruda against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosphorus15%2Fruda" "/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/Phosphorus15/ruda on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Phosphorus15/ruda [INFO] finished tweaking git repo https://github.com/Phosphorus15/ruda [INFO] tweaked toml for git repo https://github.com/Phosphorus15/ruda written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/Phosphorus15/ruda already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 425ba4547dd735c9a892e429286f494569c791424232c5a2fce2de0c9451abee [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" "425ba4547dd735c9a892e429286f494569c791424232c5a2fce2de0c9451abee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "425ba4547dd735c9a892e429286f494569c791424232c5a2fce2de0c9451abee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "425ba4547dd735c9a892e429286f494569c791424232c5a2fce2de0c9451abee", kill_on_drop: false }` [INFO] [stdout] 425ba4547dd735c9a892e429286f494569c791424232c5a2fce2de0c9451abee [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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e0ec4d81769b9a03c5bc4253f8b13a8dae710fa15adfe9fc641ef5cda475a8bd [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" "e0ec4d81769b9a03c5bc4253f8b13a8dae710fa15adfe9fc641ef5cda475a8bd", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling winapi v0.2.8 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling regex-syntax v0.3.9 [INFO] [stderr] Compiling utf8-ranges v0.1.3 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling lazy_static v0.2.11 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling ucd-trie v0.1.2 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling maplit v1.0.2 [INFO] [stderr] Compiling gcc v0.3.55 [INFO] [stderr] Compiling regex-syntax v0.6.12 [INFO] [stderr] Compiling bitflags v0.7.0 [INFO] [stderr] Compiling strsim v0.9.2 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling pest v2.1.1 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling aho-corasick v0.7.6 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling thread-id v2.0.0 [INFO] [stderr] Compiling memchr v0.1.11 [INFO] [stderr] Compiling aho-corasick v0.5.3 [INFO] [stderr] Compiling thread_local v0.2.7 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling pest_meta v2.1.1 [INFO] [stderr] Compiling regex v0.1.80 [INFO] [stderr] Compiling semver-parser v0.6.2 [INFO] [stderr] Compiling semver v0.4.1 [INFO] [stderr] Compiling pest_generator v2.1.0 [INFO] [stderr] Compiling regex v1.3.1 [INFO] [stderr] Compiling llvm-sys v38.2.0 [INFO] [stderr] Compiling pest_derive v2.1.0 [INFO] [stderr] Compiling serde_derive v1.0.101 [INFO] [stderr] Compiling docopt v1.1.0 [INFO] [stderr] Compiling ruda v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `llvm::link_time_optimizer::llvm_create_optimizer` [INFO] [stdout] --> src/main.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 27 | use llvm::link_time_optimizer::llvm_create_optimizer; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stdout] --> src/main.rs:155:36 [INFO] [stdout] | [INFO] [stdout] 155 | let mut ptr: *mut c_char = std::mem::uninitialized(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `body` [INFO] [stdout] --> src/parser.rs:191:24 [INFO] [stdout] | [INFO] [stdout] 191 | fn walk_if_cond_branch(body: RuleList) -> TypedExpr { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_body` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/llvm_gen.rs:181:63 [INFO] [stdout] | [INFO] [stdout] 181 | let func = selected.into_iter().take(1).find(|v| true).unwrap_or_else(|| panic!("Identifier not in scope: `{}`", ident)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `target_ref` is never read [INFO] [stdout] --> src/llvm_gen.rs:157:21 [INFO] [stdout] | [INFO] [stdout] 157 | let mut target_ref: LLVMValueRef = null_mut(); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `ret_val` is never read [INFO] [stdout] --> src/llvm_gen.rs:158:21 [INFO] [stdout] | [INFO] [stdout] 158 | let mut ret_val = TyName::Unit; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | let mut file_list = files.iter().map(|f| std::path::PathBuf::from(&f[..])); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/llvm_gen.rs:209:9 [INFO] [stdout] | [INFO] [stdout] 209 | let mut params = typed_params.into_iter().map(|v| v.0).collect::>(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/pool.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | let mut this = unsafe { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 09s [INFO] running `Command { std: "docker" "inspect" "e0ec4d81769b9a03c5bc4253f8b13a8dae710fa15adfe9fc641ef5cda475a8bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0ec4d81769b9a03c5bc4253f8b13a8dae710fa15adfe9fc641ef5cda475a8bd", kill_on_drop: false }` [INFO] [stdout] e0ec4d81769b9a03c5bc4253f8b13a8dae710fa15adfe9fc641ef5cda475a8bd [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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8e9ec8e7ae3748b8de67859c2b4d5d5e36a12ee68e84b9296a54e90222052cd4 [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" "8e9ec8e7ae3748b8de67859c2b4d5d5e36a12ee68e84b9296a54e90222052cd4", kill_on_drop: false }` [INFO] [stderr] Compiling ruda v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `llvm::link_time_optimizer::llvm_create_optimizer` [INFO] [stdout] --> src/main.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 27 | use llvm::link_time_optimizer::llvm_create_optimizer; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stdout] --> src/main.rs:155:36 [INFO] [stdout] | [INFO] [stdout] 155 | let mut ptr: *mut c_char = std::mem::uninitialized(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `body` [INFO] [stdout] --> src/parser.rs:191:24 [INFO] [stdout] | [INFO] [stdout] 191 | fn walk_if_cond_branch(body: RuleList) -> TypedExpr { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_body` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/llvm_gen.rs:181:63 [INFO] [stdout] | [INFO] [stdout] 181 | let func = selected.into_iter().take(1).find(|v| true).unwrap_or_else(|| panic!("Identifier not in scope: `{}`", ident)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `target_ref` is never read [INFO] [stdout] --> src/llvm_gen.rs:157:21 [INFO] [stdout] | [INFO] [stdout] 157 | let mut target_ref: LLVMValueRef = null_mut(); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `ret_val` is never read [INFO] [stdout] --> src/llvm_gen.rs:158:21 [INFO] [stdout] | [INFO] [stdout] 158 | let mut ret_val = TyName::Unit; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | let mut file_list = files.iter().map(|f| std::path::PathBuf::from(&f[..])); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/llvm_gen.rs:209:9 [INFO] [stdout] | [INFO] [stdout] 209 | let mut params = typed_params.into_iter().map(|v| v.0).collect::>(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/pool.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | let mut this = unsafe { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.86s [INFO] running `Command { std: "docker" "inspect" "8e9ec8e7ae3748b8de67859c2b4d5d5e36a12ee68e84b9296a54e90222052cd4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e9ec8e7ae3748b8de67859c2b4d5d5e36a12ee68e84b9296a54e90222052cd4", kill_on_drop: false }` [INFO] [stdout] 8e9ec8e7ae3748b8de67859c2b4d5d5e36a12ee68e84b9296a54e90222052cd4 [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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] 9f955d342ee370fe6b3bd74a1dfe23b9eb7e7fabe2a5b43dd2aaedd9d3364f56 [INFO] running `Command { std: "docker" "start" "-a" "9f955d342ee370fe6b3bd74a1dfe23b9eb7e7fabe2a5b43dd2aaedd9d3364f56", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `llvm::link_time_optimizer::llvm_create_optimizer` [INFO] [stderr] --> src/main.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | use llvm::link_time_optimizer::llvm_create_optimizer; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stderr] --> src/main.rs:155:36 [INFO] [stderr] | [INFO] [stderr] 155 | let mut ptr: *mut c_char = std::mem::uninitialized(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `body` [INFO] [stderr] --> src/parser.rs:191:24 [INFO] [stderr] | [INFO] [stderr] 191 | fn walk_if_cond_branch(body: RuleList) -> TypedExpr { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_body` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/llvm_gen.rs:181:63 [INFO] [stderr] | [INFO] [stderr] 181 | let func = selected.into_iter().take(1).find(|v| true).unwrap_or_else(|| panic!("Identifier not in scope: `{}`", ident)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `target_ref` is never read [INFO] [stderr] --> src/llvm_gen.rs:157:21 [INFO] [stderr] | [INFO] [stderr] 157 | let mut target_ref: LLVMValueRef = null_mut(); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `ret_val` is never read [INFO] [stderr] --> src/llvm_gen.rs:158:21 [INFO] [stderr] | [INFO] [stderr] 158 | let mut ret_val = TyName::Unit; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:68:9 [INFO] [stderr] | [INFO] [stderr] 68 | let mut file_list = files.iter().map(|f| std::path::PathBuf::from(&f[..])); [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/llvm_gen.rs:209:9 [INFO] [stderr] | [INFO] [stderr] 209 | let mut params = typed_params.into_iter().map(|v| v.0).collect::>(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/pool.rs:16:13 [INFO] [stderr] | [INFO] [stderr] 16 | let mut this = unsafe { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ruda-17904b25fa028e41 [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 [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "9f955d342ee370fe6b3bd74a1dfe23b9eb7e7fabe2a5b43dd2aaedd9d3364f56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f955d342ee370fe6b3bd74a1dfe23b9eb7e7fabe2a5b43dd2aaedd9d3364f56", kill_on_drop: false }` [INFO] [stdout] 9f955d342ee370fe6b3bd74a1dfe23b9eb7e7fabe2a5b43dd2aaedd9d3364f56