[INFO] fetching crate witx-codegen 0.11.4...
[INFO] checking witx-codegen-0.11.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate witx-codegen 0.11.4 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate witx-codegen 0.11.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate witx-codegen 0.11.4
[INFO] tweaked toml for crates.io crate witx-codegen 0.11.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate witx-codegen 0.11.4 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate witx-codegen 0.11.4 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 785b5d02c1766acf8350c03e45d03cb7a6aa19da28feb56e50e2692dbe867aa0
[INFO] running `Command { std: "docker" "start" "-a" "785b5d02c1766acf8350c03e45d03cb7a6aa19da28feb56e50e2692dbe867aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "785b5d02c1766acf8350c03e45d03cb7a6aa19da28feb56e50e2692dbe867aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "785b5d02c1766acf8350c03e45d03cb7a6aa19da28feb56e50e2692dbe867aa0", kill_on_drop: false }`
[INFO] [stdout] 785b5d02c1766acf8350c03e45d03cb7a6aa19da28feb56e50e2692dbe867aa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f342486f840f97c29f353f50a5c28b5994ba4632d5f8ae70b357ba79cd4c829f
[INFO] running `Command { std: "docker" "start" "-a" "f342486f840f97c29f353f50a5c28b5994ba4632d5f8ae70b357ba79cd4c829f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking log v0.4.17
[INFO] [stderr]     Checking wast v36.0.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking strum v0.27.1
[INFO] [stderr]     Checking convert_case v0.8.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling strum_macros v0.27.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.39
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking witnext v0.10.0-beta3
[INFO] [stderr]     Checking witx-codegen v0.11.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/cpp/common.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_fn_suffix` and `as_namespace` are never used
[INFO] [stdout]   --> src/cpp/common.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait Normalize {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn as_namespace(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_fn_suffix` and `as_namespace` are never used
[INFO] [stdout]   --> src/doc/common.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub trait Normalize {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn as_namespace(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_fn_suffix` and `as_namespace` are never used
[INFO] [stdout]   --> src/overview/common.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub trait Normalize {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn as_namespace(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/rust/common.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/weet/common.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_fn_suffix` is never used
[INFO] [stdout]   --> src/weet/common.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub trait Normalize {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `define_union_member_accessors` and `define_union_member` are never used
[INFO] [stdout]   --> src/weet/union.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl WeetGenerator {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout]  6 |     fn define_union_member_accessors<T: Write>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn define_union_member<T: Write>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/zig/common.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_fn` is never used
[INFO] [stdout]   --> src/zig/common.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub trait Normalize {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn as_fn(&self) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Set the module name to use instead of reading it from the witx file
[INFO] [stdout] 41 | |     #[structopt(short, long)]
[INFO] [stdout] 42 | |     pub module_name: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     /// Output file, or - for the standard output
[INFO] [stdout] 45 | |     #[structopt(short, long)]
[INFO] [stdout] 46 | |     pub output_file: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | /     /// WITX files
[INFO] [stdout] 49 | |     #[structopt()]
[INFO] [stdout] 50 | |     pub witx_files: Vec<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `witx-codegen` (lib test) due to 3 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/cpp/common.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_fn_suffix` and `as_namespace` are never used
[INFO] [stdout]   --> src/cpp/common.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait Normalize {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn as_namespace(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_fn_suffix` and `as_namespace` are never used
[INFO] [stdout]   --> src/doc/common.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub trait Normalize {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn as_namespace(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_fn_suffix` and `as_namespace` are never used
[INFO] [stdout]   --> src/overview/common.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub trait Normalize {
[INFO] [stdout]    |           --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn as_namespace(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/rust/common.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/weet/common.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_fn_suffix` is never used
[INFO] [stdout]   --> src/weet/common.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub trait Normalize {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn as_fn_suffix(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `define_union_member_accessors` and `define_union_member` are never used
[INFO] [stdout]   --> src/weet/union.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl WeetGenerator {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout]  6 |     fn define_union_member_accessors<T: Write>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn define_union_member<T: Write>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsNullable` is never used
[INFO] [stdout]  --> src/zig/common.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait IsNullable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_fn` is never used
[INFO] [stdout]   --> src/zig/common.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub trait Normalize {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn as_fn(&self) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Set the module name to use instead of reading it from the witx file
[INFO] [stdout] 41 | |     #[structopt(short, long)]
[INFO] [stdout] 42 | |     pub module_name: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     /// Output file, or - for the standard output
[INFO] [stdout] 45 | |     #[structopt(short, long)]
[INFO] [stdout] 46 | |     pub output_file: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | /     /// WITX files
[INFO] [stdout] 49 | |     #[structopt()]
[INFO] [stdout] 50 | |     pub witx_files: Vec<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `witx-codegen` (lib) due to 3 previous errors; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f342486f840f97c29f353f50a5c28b5994ba4632d5f8ae70b357ba79cd4c829f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f342486f840f97c29f353f50a5c28b5994ba4632d5f8ae70b357ba79cd4c829f", kill_on_drop: false }`
[INFO] [stdout] f342486f840f97c29f353f50a5c28b5994ba4632d5f8ae70b357ba79cd4c829f
