[INFO] fetching crate proper 0.1.5...
[INFO] testing proper-0.1.5 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate proper 0.1.5 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate proper 0.1.5
[INFO] finished tweaking crates.io crate proper 0.1.5
[INFO] tweaked toml for crates.io crate proper 0.1.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proper 0.1.5 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.110)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2be03d51e5871ea4e739555f14848b1dc0d0264698aca92ee8bdae07f4a23401
[INFO] running `Command { std: "docker" "start" "-a" "2be03d51e5871ea4e739555f14848b1dc0d0264698aca92ee8bdae07f4a23401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2be03d51e5871ea4e739555f14848b1dc0d0264698aca92ee8bdae07f4a23401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be03d51e5871ea4e739555f14848b1dc0d0264698aca92ee8bdae07f4a23401", kill_on_drop: false }`
[INFO] [stdout] 2be03d51e5871ea4e739555f14848b1dc0d0264698aca92ee8bdae07f4a23401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 231a9027fab353b131d089a4369f98885431cf6a8e5ee396572c5856fc6d4215
[INFO] running `Command { std: "docker" "start" "-a" "231a9027fab353b131d089a4369f98885431cf6a8e5ee396572c5856fc6d4215", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proper v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(bind_by_move_pattern_guards, proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err_ctor` is never read
[INFO] [stdout]  --> src/attr.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct PrimAttrs {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 6 |     pub min_ty: Option<IntTy>,
[INFO] [stdout] 7 |     pub err_ctor: Option<syn::Path>,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "231a9027fab353b131d089a4369f98885431cf6a8e5ee396572c5856fc6d4215", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "231a9027fab353b131d089a4369f98885431cf6a8e5ee396572c5856fc6d4215", kill_on_drop: false }`
[INFO] [stdout] 231a9027fab353b131d089a4369f98885431cf6a8e5ee396572c5856fc6d4215
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e3101318911b498ab564b098e630833e36de02bbedd1f2516484c46857fcc47
[INFO] running `Command { std: "docker" "start" "-a" "7e3101318911b498ab564b098e630833e36de02bbedd1f2516484c46857fcc47", kill_on_drop: false }`
[INFO] [stderr]    Compiling proper v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(bind_by_move_pattern_guards, proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(bind_by_move_pattern_guards, proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err_ctor` is never read
[INFO] [stdout]  --> src/attr.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct PrimAttrs {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 6 |     pub min_ty: Option<IntTy>,
[INFO] [stdout] 7 |     pub err_ctor: Option<syn::Path>,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err_ctor` is never read
[INFO] [stdout]  --> src/attr.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct PrimAttrs {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 6 |     pub min_ty: Option<IntTy>,
[INFO] [stdout] 7 |     pub err_ctor: Option<syn::Path>,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "7e3101318911b498ab564b098e630833e36de02bbedd1f2516484c46857fcc47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e3101318911b498ab564b098e630833e36de02bbedd1f2516484c46857fcc47", kill_on_drop: false }`
[INFO] [stdout] 7e3101318911b498ab564b098e630833e36de02bbedd1f2516484c46857fcc47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 455837ae3497f732d4bc2c534cc5e39c3bb7f761e4a2c136b6b5c5195e389ae3
[INFO] running `Command { std: "docker" "start" "-a" "455837ae3497f732d4bc2c534cc5e39c3bb7f761e4a2c136b6b5c5195e389ae3", kill_on_drop: false }`
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 66 | #![feature(bind_by_move_pattern_guards, proc_macro_diagnostic, proc_macro_span)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `err_ctor` is never read
[INFO] [stderr]  --> src/attr.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct PrimAttrs {
[INFO] [stderr]   |            --------- field in this struct
[INFO] [stderr] 6 |     pub min_ty: Option<IntTy>,
[INFO] [stderr] 7 |     pub err_ctor: Option<syn::Path>,
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `proper` (lib) generated 2 warnings
[INFO] [stderr] warning: `proper` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/proper-3bb745e5d603c00c)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests proper
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 54) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 16) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 54) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `u16: From<FileDescriptor>` is not satisfied
[INFO] [stdout]   --> src/lib.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 | let prim: u16 = fd.into(); // won't compile!
[INFO] [stdout]    |                    ^^^^ the trait `From<FileDescriptor>` is not implemented for `u16`
[INFO] [stdout]    |
[INFO] [stdout] help: the following other types implement trait `From<T>`
[INFO] [stdout]   --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ascii/ascii_char.rs:1171:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `u16` implements `From<Char>`
[INFO] [stdout]   --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/convert/num.rs:87:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `u16` implements `From<bool>`
[INFO] [stdout]   ::: /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/convert/num.rs:100:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `u16` implements `From<u8>`
[INFO] [stdout]    = note: required for `FileDescriptor` to implement `Into<u16>`
[INFO] [stdout]    = note: this error originates in the macro `into_int_impl` which comes from the expansion of the macro `impl_from` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 16) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_16_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 34 | let e_u8 = EnumU8::try_from(42u8)?;
[INFO] [stdout]    |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 18 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_16_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 19 | use std::convert::TryFrom;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let prim = e_u16 as u8;
[INFO] [stdout] 40 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `EnumU8: TryFrom<u16>` is not satisfied
[INFO] [stdout]   --> src/lib.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | let e_u8 = EnumU8::try_from(42u16)?;   // won't compile!
[INFO] [stdout]    |            ^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the trait `TryFrom<u16>` is not implemented for `EnumU8`
[INFO] [stdout]       but trait `TryFrom<u8>` is implemented for it
[INFO] [stdout]   --> src/lib.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Prim)]
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    = help: for that trait implementation, expected `u8`, found `u16`
[INFO] [stdout]    = note: required for `u16` to implement `Into<EnumU8>`
[INFO] [stdout]    = note: required for `EnumU8` to implement `TryFrom<u16>`
[INFO] [stdout]    = note: this error originates in the derive macro `Prim` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:35:35
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_16_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 35 | let e_u8 = EnumU8::try_from(42u16)?;   // won't compile!
[INFO] [stdout]    |                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 18 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_16_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 19 | use std::convert::TryFrom;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let prim = e_u16 as u8;
[INFO] [stdout] 40 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_16_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 36 | let e_u16 = EnumU16::try_from(42u16)?; // compiles!
[INFO] [stdout]    |                                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 18 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_16_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 19 | use std::convert::TryFrom;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let prim = e_u16 as u8;
[INFO] [stdout] 40 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `EnumU8: From<u16>` is not satisfied
[INFO] [stdout]   --> src/lib.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | let e_u8 = EnumU8::try_from(42u16)?;   // won't compile!
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the trait `TryFrom<u16>` is not implemented for `EnumU8`
[INFO] [stdout]       but trait `TryFrom<u8>` is implemented for it
[INFO] [stdout]   --> src/lib.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Prim)]
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    = help: for that trait implementation, expected `u8`, found `u16`
[INFO] [stdout]    = note: required for `u16` to implement `Into<EnumU8>`
[INFO] [stdout]    = note: required for `EnumU8` to implement `TryFrom<u16>`
[INFO] [stdout]    = note: this error originates in the derive macro `Prim` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 16)
[INFO] [stdout]     src/lib.rs - (line 54)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "455837ae3497f732d4bc2c534cc5e39c3bb7f761e4a2c136b6b5c5195e389ae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455837ae3497f732d4bc2c534cc5e39c3bb7f761e4a2c136b6b5c5195e389ae3", kill_on_drop: false }`
[INFO] [stdout] 455837ae3497f732d4bc2c534cc5e39c3bb7f761e4a2c136b6b5c5195e389ae3
