[INFO] crate convertible 0.0.1 is already in cache
[INFO] testing convertible-0.0.1 against 1.45.2 for beta-1.46-1
[INFO] extracting crate convertible 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate convertible 0.0.1 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate convertible 0.0.1
[INFO] finished tweaking crates.io crate convertible 0.0.1
[INFO] tweaked toml for crates.io crate convertible 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64f427c3158f52413bbeb2fb66a7ea3573d52344caf6d140e8bc03e3e37b7511
[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" "64f427c3158f52413bbeb2fb66a7ea3573d52344caf6d140e8bc03e3e37b7511", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64f427c3158f52413bbeb2fb66a7ea3573d52344caf6d140e8bc03e3e37b7511", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f427c3158f52413bbeb2fb66a7ea3573d52344caf6d140e8bc03e3e37b7511", kill_on_drop: false }`
[INFO] [stdout] 64f427c3158f52413bbeb2fb66a7ea3573d52344caf6d140e8bc03e3e37b7511
[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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7535beb6f6c700dc24399768d918029bd48a187f1c0df913d34d437a39d12d4b
[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" "7535beb6f6c700dc24399768d918029bd48a187f1c0df913d34d437a39d12d4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling convertible v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![license = "MIT"]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `license` in this scope
[INFO] [stdout]  --> src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![license = "MIT"]
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> src/lib.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn to<C: Convertible<Self>>(&self) -> Option<C>;
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout] ...
[INFO] [stdout] 37 | pub trait Convertible<From> {
[INFO] [stdout]    |                       ---- required by this bound in `Convertible`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::marker::Sized` is not implemented for `Self`
[INFO] [stdout]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn to<C: Convertible<Self>>(&self) -> Option<C> where Self: std::marker::Sized;
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider relaxing the implicit `Sized` restriction
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub trait Convertible<From: ?Sized> {
[INFO] [stdout]    |                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> src/lib.rs:20:18
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn coerce<C: Coercible<Self>>(self) -> Result<C, Self>;
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout] ...
[INFO] [stdout] 47 | pub trait Coercible<From> {
[INFO] [stdout]    |                     ---- required by this bound in `Coercible`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::marker::Sized` is not implemented for `Self`
[INFO] [stdout]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn coerce<C: Coercible<Self>>(self) -> Result<C, Self> where Self: std::marker::Sized;
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider relaxing the implicit `Sized` restriction
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait Coercible<From: ?Sized> {
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:39:26
[INFO] [stdout]     |
[INFO] [stdout] 39  |     fn convert(&From) -> Option<Self>;
[INFO] [stdout]     |                          ^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::marker::Sized` is not implemented for `Self`
[INFO] [stdout]     = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 39  |     fn convert(&From) -> Option<Self> where Self: std::marker::Sized;
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:51:24
[INFO] [stdout]     |
[INFO] [stdout] 51  |     fn coerce(From) -> Result<Self, From>;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::marker::Sized` is not implemented for `Self`
[INFO] [stdout]     = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 51  |     fn coerce(From) -> Result<Self, From> where Self: std::marker::Sized;
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `convertible`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7535beb6f6c700dc24399768d918029bd48a187f1c0df913d34d437a39d12d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7535beb6f6c700dc24399768d918029bd48a187f1c0df913d34d437a39d12d4b", kill_on_drop: false }`
[INFO] [stdout] 7535beb6f6c700dc24399768d918029bd48a187f1c0df913d34d437a39d12d4b