[INFO] fetching crate microtensor 0.1.5...
[INFO] testing microtensor-0.1.5 against 1.91.0 for beta-1.92-2
[INFO] extracting crate microtensor 0.1.5 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate microtensor 0.1.5
[INFO] finished tweaking crates.io crate microtensor 0.1.5
[INFO] tweaked toml for crates.io crate microtensor 0.1.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate microtensor 0.1.5 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate microtensor 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metatype v0.2.1
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded procinfo v0.4.2
[INFO] [stderr]   Downloaded thread-tree v0.3.3
[INFO] [stderr]   Downloaded nom v2.2.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.13
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded postcard v1.0.2
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded riscv v0.7.0
[INFO] [stderr]   Downloaded riscv-target v0.1.2
[INFO] [stderr]   Downloaded nix v0.15.0
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.10
[INFO] [stderr]   Downloaded palaver v0.2.8
[INFO] [stderr]   Downloaded relative v0.2.2
[INFO] [stderr]   Downloaded serde_traitobject v0.2.8
[INFO] [stderr]   Downloaded build_id v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e70d26b7579f0fd49b61f973d1ef80ead23286f2c4b8853bcd348ad815b4540a
[INFO] running `Command { std: "docker" "start" "-a" "e70d26b7579f0fd49b61f973d1ef80ead23286f2c4b8853bcd348ad815b4540a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e70d26b7579f0fd49b61f973d1ef80ead23286f2c4b8853bcd348ad815b4540a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e70d26b7579f0fd49b61f973d1ef80ead23286f2c4b8853bcd348ad815b4540a", kill_on_drop: false }`
[INFO] [stdout] e70d26b7579f0fd49b61f973d1ef80ead23286f2c4b8853bcd348ad815b4540a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 872d6d1e12541ff97d84d762a85ffa58400d4a0c5a0e4c8cea940f0f3fc3cf46
[INFO] running `Command { std: "docker" "start" "-a" "872d6d1e12541ff97d84d762a85ffa58400d4a0c5a0e4c8cea940f0f3fc3cf46", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.13
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling build_id v0.2.1
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling relative v0.2.2
[INFO] [stderr]    Compiling twox-hash v1.6.3
[INFO] [stderr]    Compiling erased-serde v0.3.23
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling metatype v0.2.1
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling cobs v0.2.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | #![feature(arbitrary_self_types)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![feature(ptr_metadata)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const T` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:114:24
[INFO] [stdout]     |
[INFO] [stdout] 114 |     default fn meta(self: *const Self) -> Self::Meta {
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const T` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:121:24
[INFO] [stdout]     |
[INFO] [stdout] 121 |     default fn data(self: *const Self) -> *const () {
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*mut T` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:125:28
[INFO] [stdout]     |
[INFO] [stdout] 125 |     default fn data_mut(self: *mut Self) -> *mut () {
[INFO] [stdout]     |                               ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const T` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:159:16
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn meta(self: *const Self) -> Self::Meta {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const T` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:163:16
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn data(self: *const Self) -> *const () {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*mut T` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:167:20
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn data_mut(self: *mut Self) -> *mut () {
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const [T]` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:182:16
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn meta(self: *const Self) -> Self::Meta {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const [T]` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:191:16
[INFO] [stdout]     |
[INFO] [stdout] 191 |     fn data(self: *const Self) -> *const () {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*mut [T]` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:195:20
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn data_mut(self: *mut Self) -> *mut () {
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const str` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:211:16
[INFO] [stdout]     |
[INFO] [stdout] 211 |     fn meta(self: *const Self) -> Self::Meta {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const str` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:217:16
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn data(self: *const Self) -> *const () {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*mut str` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:221:20
[INFO] [stdout]     |
[INFO] [stdout] 221 |     fn data_mut(self: *mut Self) -> *mut () {
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]     = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const Self` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn meta_type(self: *const Self) -> MetaType {
[INFO] [stdout]    |                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const Self` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn meta(self: *const Self) -> Self::Meta;
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*const Self` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn data(self: *const Self) -> *const ();
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `*mut Self` cannot be used as the type of `self` without the `arbitrary_self_types_pointers` feature
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/metatype-0.2.1/src/lib.rs:75:20
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn data_mut(self: *mut Self) -> *mut ();
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box<Self>`, `self: Rc<Self>`, or `self: Arc<Self>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metatype` (lib) due to 19 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "872d6d1e12541ff97d84d762a85ffa58400d4a0c5a0e4c8cea940f0f3fc3cf46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "872d6d1e12541ff97d84d762a85ffa58400d4a0c5a0e4c8cea940f0f3fc3cf46", kill_on_drop: false }`
[INFO] [stdout] 872d6d1e12541ff97d84d762a85ffa58400d4a0c5a0e4c8cea940f0f3fc3cf46
