[INFO] cloning repository https://github.com/nilern/Kyy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nilern/Kyy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnilern%2FKyy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnilern%2FKyy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18a76d995b129d07b93e150fc2ca520441b59ba1
[INFO] testing nilern/Kyy against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnilern%2FKyy" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nilern/Kyy on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nilern/Kyy
[INFO] finished tweaking git repo https://github.com/nilern/Kyy
[INFO] tweaked toml for git repo https://github.com/nilern/Kyy written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/nilern/Kyy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc9658bceee4af9d34595139f7ff09413a49be655198e08215540b9de5098a5c
[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" "cc9658bceee4af9d34595139f7ff09413a49be655198e08215540b9de5098a5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc9658bceee4af9d34595139f7ff09413a49be655198e08215540b9de5098a5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc9658bceee4af9d34595139f7ff09413a49be655198e08215540b9de5098a5c", kill_on_drop: false }`
[INFO] [stdout] cc9658bceee4af9d34595139f7ff09413a49be655198e08215540b9de5098a5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20b131ce32101b79bc9120bc8883788d8707fd4047f1c35ec266f4070d591896
[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" "20b131ce32101b79bc9120bc8883788d8707fd4047f1c35ec266f4070d591896", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling dirs-sys-next v0.1.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling dirs-next v1.0.2
[INFO] [stderr]    Compiling intrusive-collections v0.9.0
[INFO] [stderr]    Compiling rustyline v6.3.0
[INFO] [stderr]    Compiling kyy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `heap`
[INFO] [stdout]   --> src/gc.rs:97:23
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn mark(mut self, heap: &mut Heap) -> Gc<T> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_heap`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `align`
[INFO] [stdout]    --> src/gc.rs:267:63
[INFO] [stdout]     |
[INFO] [stdout] 267 |     unsafe fn alloc(&mut self, heading: Heading, class: ORef, align: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_align`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `align`
[INFO] [stdout]    --> src/gc.rs:299:63
[INFO] [stdout]     |
[INFO] [stdout] 299 |     unsafe fn alloc_bytes(&mut self, class: ORef, len: usize, align: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_align`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `of`
[INFO] [stdout]   --> src/gc.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn of<T>() -> GSize {
[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: `in_bytes`
[INFO] [stdout]   --> src/gc.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn in_bytes(self) -> usize { self.0 * size_of::<Granule>() }
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_mut_ptr`
[INFO] [stdout]   --> src/gc.rs:79:15
[INFO] [stdout]    |
[INFO] [stdout] 79 |     unsafe fn as_mut_ptr(&mut self) -> *mut T { self.0.as_mut() as _ }
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `header`
[INFO] [stdout]   --> src/gc.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn header<'a>(&'a self) -> &'a Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `header_mut`
[INFO] [stdout]   --> src/gc.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn header_mut<'a>(&'a mut self) -> &'a mut Header {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_marked`
[INFO] [stdout]   --> src/gc.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn is_marked(self) -> bool { self.header().is_marked() }
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]   --> src/gc.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn mark(mut self, heap: &mut Heap) -> Gc<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `NULL`
[INFO] [stdout]    --> src/gc.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     const NULL: ORef = ORef(0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_ptr`
[INFO] [stdout]    --> src/gc.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn as_ptr(self) -> Option<NonNull<()>> { NonNull::new(self.0 as *mut ()) }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TAG_MASK`
[INFO] [stdout]    --> src/gc.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | const TAG_MASK: usize = (1 << TAG_BITCOUNT) - 1;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MARK_BIT`
[INFO] [stdout]    --> src/gc.rs:137:1
[INFO] [stdout]     |
[INFO] [stdout] 137 | const MARK_BIT: usize = 0b01;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bytes`
[INFO] [stdout]    --> src/gc.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn bytes(size: usize) -> Heading {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `slots`
[INFO] [stdout]    --> src/gc.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn slots(gsize: GSize) -> Heading {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `filler`
[INFO] [stdout]    --> src/gc.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn filler(gsize: GSize) -> Heading { Heading::slots(gsize) }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> src/gc.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn size(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_marked`
[INFO] [stdout]    --> src/gc.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn is_marked(&self) -> bool { (self.0 & MARK_BIT) == MARK_BIT }
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]    --> src/gc.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn mark(&mut self) { self.0 = self.0 | MARK_BIT }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmark`
[INFO] [stdout]    --> src/gc.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn unmark(&mut self) { self.0 = self.0 & !MARK_BIT }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]    --> src/gc.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | struct Header {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gsize`
[INFO] [stdout]    --> src/gc.rs:190:8
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn gsize(&self) -> GSize { self.heading.gsize() }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> src/gc.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn size(&self) -> usize { self.heading.size() }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_bytes`
[INFO] [stdout]    --> src/gc.rs:194:8
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn is_bytes(&self) -> bool { self.heading.is_bytes() }
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]    --> src/gc.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn mark(&mut self) { self.heading.mark(); }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmark`
[INFO] [stdout]    --> src/gc.rs:198:8
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn unmark(&mut self) { self.heading.unmark(); }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_marked`
[INFO] [stdout]    --> src/gc.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 200 |     fn is_marked(&self) -> bool { self.heading.is_marked() }
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `slots_mut`
[INFO] [stdout]    --> src/gc.rs:202:8
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn slots_mut(&mut self) -> Option<&mut [ORef]> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FreeList`
[INFO] [stdout]    --> src/gc.rs:226:1
[INFO] [stdout]     |
[INFO] [stdout] 226 | type FreeList = SinglyLinkedList<FreeListAdapter>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gsize`
[INFO] [stdout]    --> src/gc.rs:229:8
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn gsize(&self) -> GSize { self.heading.gsize() }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Heap`
[INFO] [stdout]    --> src/gc.rs:234:8
[INFO] [stdout]     |
[INFO] [stdout] 234 | struct Heap {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/gc.rs:241:8
[INFO] [stdout]     |
[INFO] [stdout] 241 |     fn new(max_size: usize) -> Option<Heap> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alloc`
[INFO] [stdout]    --> src/gc.rs:267:15
[INFO] [stdout]     |
[INFO] [stdout] 267 |     unsafe fn alloc(&mut self, heading: Heading, class: ORef, align: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alloc_slots`
[INFO] [stdout]    --> src/gc.rs:295:15
[INFO] [stdout]     |
[INFO] [stdout] 295 |     unsafe fn alloc_slots(&mut self, class: ORef, len: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alloc_bytes`
[INFO] [stdout]    --> src/gc.rs:299:15
[INFO] [stdout]     |
[INFO] [stdout] 299 |     unsafe fn alloc_bytes(&mut self, class: ORef, len: usize, align: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gc`
[INFO] [stdout]    --> src/gc.rs:303:15
[INFO] [stdout]     |
[INFO] [stdout] 303 |     unsafe fn gc(&mut self, roots: &mut [ORef]) {
[INFO] [stdout]     |               ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]    --> src/gc.rs:308:15
[INFO] [stdout]     |
[INFO] [stdout] 308 |     unsafe fn mark(&mut self, roots: &mut [ORef]) {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sweep`
[INFO] [stdout]    --> src/gc.rs:335:15
[INFO] [stdout]     |
[INFO] [stdout] 335 |     unsafe fn sweep(&mut self) {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.01s
[INFO] running `Command { std: "docker" "inspect" "20b131ce32101b79bc9120bc8883788d8707fd4047f1c35ec266f4070d591896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b131ce32101b79bc9120bc8883788d8707fd4047f1c35ec266f4070d591896", kill_on_drop: false }`
[INFO] [stdout] 20b131ce32101b79bc9120bc8883788d8707fd4047f1c35ec266f4070d591896
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", 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] 76d1f4d3ad128565f9701fc0357e7522d256960c7f3fdc984849d107545a3d1c
[INFO] running `Command { std: "docker" "start" "-a" "76d1f4d3ad128565f9701fc0357e7522d256960c7f3fdc984849d107545a3d1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling kyy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `heap`
[INFO] [stdout]   --> src/gc.rs:97:23
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn mark(mut self, heap: &mut Heap) -> Gc<T> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_heap`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `align`
[INFO] [stdout]    --> src/gc.rs:267:63
[INFO] [stdout]     |
[INFO] [stdout] 267 |     unsafe fn alloc(&mut self, heading: Heading, class: ORef, align: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_align`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `align`
[INFO] [stdout]    --> src/gc.rs:299:63
[INFO] [stdout]     |
[INFO] [stdout] 299 |     unsafe fn alloc_bytes(&mut self, class: ORef, len: usize, align: usize) -> Option<Gc<()>> {
[INFO] [stdout]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_align`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_mut_ptr`
[INFO] [stdout]   --> src/gc.rs:79:15
[INFO] [stdout]    |
[INFO] [stdout] 79 |     unsafe fn as_mut_ptr(&mut self) -> *mut T { self.0.as_mut() as _ }
[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: `header_mut`
[INFO] [stdout]   --> src/gc.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn header_mut<'a>(&'a mut self) -> &'a mut Header {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_marked`
[INFO] [stdout]   --> src/gc.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn is_marked(self) -> bool { self.header().is_marked() }
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]   --> src/gc.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn mark(mut self, heap: &mut Heap) -> Gc<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_ptr`
[INFO] [stdout]    --> src/gc.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn as_ptr(self) -> Option<NonNull<()>> { NonNull::new(self.0 as *mut ()) }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TAG_MASK`
[INFO] [stdout]    --> src/gc.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | const TAG_MASK: usize = (1 << TAG_BITCOUNT) - 1;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]    --> src/gc.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn mark(&mut self) { self.0 = self.0 | MARK_BIT }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmark`
[INFO] [stdout]    --> src/gc.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn unmark(&mut self) { self.0 = self.0 & !MARK_BIT }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]    --> src/gc.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn mark(&mut self) { self.heading.mark(); }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmark`
[INFO] [stdout]    --> src/gc.rs:198:8
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn unmark(&mut self) { self.heading.unmark(); }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `slots_mut`
[INFO] [stdout]    --> src/gc.rs:202:8
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn slots_mut(&mut self) -> Option<&mut [ORef]> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gc`
[INFO] [stdout]    --> src/gc.rs:303:15
[INFO] [stdout]     |
[INFO] [stdout] 303 |     unsafe fn gc(&mut self, roots: &mut [ORef]) {
[INFO] [stdout]     |               ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mark`
[INFO] [stdout]    --> src/gc.rs:308:15
[INFO] [stdout]     |
[INFO] [stdout] 308 |     unsafe fn mark(&mut self, roots: &mut [ORef]) {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sweep`
[INFO] [stdout]    --> src/gc.rs:335:15
[INFO] [stdout]     |
[INFO] [stdout] 335 |     unsafe fn sweep(&mut self) {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "76d1f4d3ad128565f9701fc0357e7522d256960c7f3fdc984849d107545a3d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d1f4d3ad128565f9701fc0357e7522d256960c7f3fdc984849d107545a3d1c", kill_on_drop: false }`
[INFO] [stdout] 76d1f4d3ad128565f9701fc0357e7522d256960c7f3fdc984849d107545a3d1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5a6bf5d8d2b14921b63ea988ff8f994ccd3e25ec3695e42cc5de9aeca9a6ba2b
[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" "5a6bf5d8d2b14921b63ea988ff8f994ccd3e25ec3695e42cc5de9aeca9a6ba2b", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `heap`
[INFO] [stderr]   --> src/gc.rs:97:23
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn mark(mut self, heap: &mut Heap) -> Gc<T> {
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_heap`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `align`
[INFO] [stderr]    --> src/gc.rs:267:63
[INFO] [stderr]     |
[INFO] [stderr] 267 |     unsafe fn alloc(&mut self, heading: Heading, class: ORef, align: usize) -> Option<Gc<()>> {
[INFO] [stderr]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_align`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `align`
[INFO] [stderr]    --> src/gc.rs:299:63
[INFO] [stderr]     |
[INFO] [stderr] 299 |     unsafe fn alloc_bytes(&mut self, class: ORef, len: usize, align: usize) -> Option<Gc<()>> {
[INFO] [stderr]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_align`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_mut_ptr`
[INFO] [stderr]   --> src/gc.rs:79:15
[INFO] [stderr]    |
[INFO] [stderr] 79 |     unsafe fn as_mut_ptr(&mut self) -> *mut T { self.0.as_mut() as _ }
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `header_mut`
[INFO] [stderr]   --> src/gc.rs:88:8
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn header_mut<'a>(&'a mut self) -> &'a mut Header {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_marked`
[INFO] [stderr]   --> src/gc.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn is_marked(self) -> bool { self.header().is_marked() }
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mark`
[INFO] [stderr]   --> src/gc.rs:97:8
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn mark(mut self, heap: &mut Heap) -> Gc<T> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_ptr`
[INFO] [stderr]    --> src/gc.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 |     fn as_ptr(self) -> Option<NonNull<()>> { NonNull::new(self.0 as *mut ()) }
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `TAG_MASK`
[INFO] [stderr]    --> src/gc.rs:134:1
[INFO] [stderr]     |
[INFO] [stderr] 134 | const TAG_MASK: usize = (1 << TAG_BITCOUNT) - 1;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mark`
[INFO] [stderr]    --> src/gc.rs:176:8
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn mark(&mut self) { self.0 = self.0 | MARK_BIT }
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unmark`
[INFO] [stderr]    --> src/gc.rs:178:8
[INFO] [stderr]     |
[INFO] [stderr] 178 |     fn unmark(&mut self) { self.0 = self.0 & !MARK_BIT }
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mark`
[INFO] [stderr]    --> src/gc.rs:196:8
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn mark(&mut self) { self.heading.mark(); }
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unmark`
[INFO] [stderr]    --> src/gc.rs:198:8
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn unmark(&mut self) { self.heading.unmark(); }
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `slots_mut`
[INFO] [stderr]    --> src/gc.rs:202:8
[INFO] [stderr]     |
[INFO] [stderr] 202 |     fn slots_mut(&mut self) -> Option<&mut [ORef]> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `gc`
[INFO] [stderr]    --> src/gc.rs:303:15
[INFO] [stderr]     |
[INFO] [stderr] 303 |     unsafe fn gc(&mut self, roots: &mut [ORef]) {
[INFO] [stderr]     |               ^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mark`
[INFO] [stderr]    --> src/gc.rs:308:15
[INFO] [stderr]     |
[INFO] [stderr] 308 |     unsafe fn mark(&mut self, roots: &mut [ORef]) {
[INFO] [stderr]     |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sweep`
[INFO] [stderr]    --> src/gc.rs:335:15
[INFO] [stderr]     |
[INFO] [stderr] 335 |     unsafe fn sweep(&mut self) {
[INFO] [stderr]     |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/kyy-1ce5f6ddc30bd2f9
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test gc::tests::alloc_bytes ... ok
[INFO] [stdout] test gc::tests::sizes ... ok
[INFO] [stdout] test gc::tests::new_heap ... ok
[INFO] [stdout] test gc::tests::alloc_slots ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5a6bf5d8d2b14921b63ea988ff8f994ccd3e25ec3695e42cc5de9aeca9a6ba2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6bf5d8d2b14921b63ea988ff8f994ccd3e25ec3695e42cc5de9aeca9a6ba2b", kill_on_drop: false }`
[INFO] [stdout] 5a6bf5d8d2b14921b63ea988ff8f994ccd3e25ec3695e42cc5de9aeca9a6ba2b