[INFO] cloning repository https://github.com/sticnarf/donkey-fs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sticnarf/donkey-fs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsticnarf%2Fdonkey-fs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsticnarf%2Fdonkey-fs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5990c653bfa8fdc027747381edc57f36e7c24fb
[INFO] documenting sticnarf/donkey-fs against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsticnarf%2Fdonkey-fs" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sticnarf/donkey-fs on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sticnarf/donkey-fs
[INFO] finished tweaking git repo https://github.com/sticnarf/donkey-fs
[INFO] tweaked toml for git repo https://github.com/sticnarf/donkey-fs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/sticnarf/donkey-fs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", 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] 9cec584816fb885b9576a43802ef8484888d9993119cdd1b78f860e3812d5efc
[INFO] running `Command { std: "docker" "start" "-a" "9cec584816fb885b9576a43802ef8484888d9993119cdd1b78f860e3812d5efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cec584816fb885b9576a43802ef8484888d9993119cdd1b78f860e3812d5efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cec584816fb885b9576a43802ef8484888d9993119cdd1b78f860e3812d5efc", kill_on_drop: false }`
[INFO] [stdout] 9cec584816fb885b9576a43802ef8484888d9993119cdd1b78f860e3812d5efc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b541235af59399087fc268f27f8e80e86c66ac3accc87afdbc04afb433f33ca
[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" "5b541235af59399087fc268f27f8e80e86c66ac3accc87afdbc04afb433f33ca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling im v11.0.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking dkfs v0.1.2 (/opt/rustwide/workdir/dkfs)
[INFO] [stderr]  Documenting dkfs v0.1.2 (/opt/rustwide/workdir/dkfs)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/lib.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 149 |     dev: Box<Device + 'a>,
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 149 -     dev: Box<Device + 'a>,
[INFO] [stdout] 149 +     dev: Box<dyn Device + 'a>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/lib.rs:102:30
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn open<'a>(mut dev: Box<Device + 'a>) -> DkResult<Handle<'a>> {
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 - pub fn open<'a>(mut dev: Box<Device + 'a>) -> DkResult<Handle<'a>> {
[INFO] [stdout] 102 + pub fn open<'a>(mut dev: Box<dyn Device + 'a>) -> DkResult<Handle<'a>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/lib.rs:107:32
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn format<'a>(mut dev: Box<Device + 'a>, opts: FormatOptions) -> DkResult<Handle<'a>> {
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 107 - pub fn format<'a>(mut dev: Box<Device + 'a>, opts: FormatOptions) -> DkResult<Handle<'a>> {
[INFO] [stdout] 107 + pub fn format<'a>(mut dev: Box<dyn Device + 'a>, opts: FormatOptions) -> DkResult<Handle<'a>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/lib.rs:158:21
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn new(dev: Box<Device + 'a>, sb: SuperBlock) -> Donkey<'a> {
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     fn new(dev: Box<Device + 'a>, sb: SuperBlock) -> Donkey<'a> {
[INFO] [stdout] 158 +     fn new(dev: Box<dyn Device + 'a>, sb: SuperBlock) -> Donkey<'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/lib.rs:206:46
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn write(&mut self, ptr: u64, writable: &Writable) -> DkResult<()> {
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 206 -     fn write(&mut self, ptr: u64, writable: &Writable) -> DkResult<()> {
[INFO] [stdout] 206 +     fn write(&mut self, ptr: u64, writable: &dyn Writable) -> DkResult<()> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> dkfs/src/block.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Writable for Box<Writable> {
[INFO] [stdout]    |                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 24 - impl Writable for Box<Writable> {
[INFO] [stdout] 24 + impl Writable for Box<dyn Writable> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> dkfs/src/block.rs:21:47
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>>;
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 -     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>>;
[INFO] [stdout] 21 +     fn as_bytes<'a>(&'a self) -> DkResult<Box<dyn Deref<Target = [u8]> + 'a>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> dkfs/src/block.rs:25:47
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 -     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout] 25 +     fn as_bytes<'a>(&'a self) -> DkResult<Box<dyn Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/block.rs:179:48
[INFO] [stdout]     |
[INFO] [stdout] 179 |             fn as_bytes(&self) -> DkResult<Box<Deref<Target = [u8]>>> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 | impl_block!(SuperBlock; validation: sbv);
[INFO] [stdout]     | ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 179 -             fn as_bytes(&self) -> DkResult<Box<Deref<Target = [u8]>>> {
[INFO] [stdout] 179 +             fn as_bytes(&self) -> DkResult<Box<dyn Deref<Target = [u8]>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/block.rs:179:48
[INFO] [stdout]     |
[INFO] [stdout] 179 |             fn as_bytes(&self) -> DkResult<Box<Deref<Target = [u8]>>> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_block!(FreeList);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 179 -             fn as_bytes(&self) -> DkResult<Box<Deref<Target = [u8]>>> {
[INFO] [stdout] 179 +             fn as_bytes(&self) -> DkResult<Box<dyn Deref<Target = [u8]>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/block.rs:179:48
[INFO] [stdout]     |
[INFO] [stdout] 179 |             fn as_bytes(&self) -> DkResult<Box<Deref<Target = [u8]>>> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 | impl_block!(Inode; validation: inv);
[INFO] [stdout]     | ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 179 -             fn as_bytes(&self) -> DkResult<Box<Deref<Target = [u8]>>> {
[INFO] [stdout] 179 +             fn as_bytes(&self) -> DkResult<Box<dyn Deref<Target = [u8]>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/block.rs:201:47
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 201 -     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout] 201 +     fn as_bytes<'a>(&'a self) -> DkResult<Box<dyn Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/block.rs:220:47
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 220 -     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout] 220 +     fn as_bytes<'a>(&'a self) -> DkResult<Box<dyn Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> dkfs/src/block.rs:228:47
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 228 -     fn as_bytes<'a>(&'a self) -> DkResult<Box<Deref<Target = [u8]> + 'a>> {
[INFO] [stdout] 228 +     fn as_bytes<'a>(&'a self) -> DkResult<Box<dyn Deref<Target = [u8]> + 'a>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> dkfs/src/device.rs:52:39
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn write_at(&mut self, writable: &Writable, ptr: u64) -> DkResult<()> {
[INFO] [stdout]    |                                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 52 -     fn write_at(&mut self, writable: &Writable, ptr: u64) -> DkResult<()> {
[INFO] [stdout] 52 +     fn write_at(&mut self, writable: &dyn Writable, ptr: u64) -> DkResult<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting mkdk v0.1.2 (/opt/rustwide/workdir/mkdk)
[INFO] [stderr]  Documenting mtdk v0.1.2 (/opt/rustwide/workdir/mtdk)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.43s
[INFO] running `Command { std: "docker" "inspect" "5b541235af59399087fc268f27f8e80e86c66ac3accc87afdbc04afb433f33ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b541235af59399087fc268f27f8e80e86c66ac3accc87afdbc04afb433f33ca", kill_on_drop: false }`
[INFO] [stdout] 5b541235af59399087fc268f27f8e80e86c66ac3accc87afdbc04afb433f33ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] c3f8a28a8745ef4b8be435c72991f476c17d71036b7b08f992d773f61e567fa2
[INFO] running `Command { std: "docker" "start" "-a" "c3f8a28a8745ef4b8be435c72991f476c17d71036b7b08f992d773f61e567fa2", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "c3f8a28a8745ef4b8be435c72991f476c17d71036b7b08f992d773f61e567fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3f8a28a8745ef4b8be435c72991f476c17d71036b7b08f992d773f61e567fa2", kill_on_drop: false }`
[INFO] [stdout] c3f8a28a8745ef4b8be435c72991f476c17d71036b7b08f992d773f61e567fa2