[INFO] cloning repository https://github.com/UnisonChain/serde-reflection
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UnisonChain/serde-reflection" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnisonChain%2Fserde-reflection", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnisonChain%2Fserde-reflection'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e3cadc8c8c4db57eb831e26cf5687caaecbbe7e
[INFO] checking UnisonChain/serde-reflection against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnisonChain%2Fserde-reflection" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/UnisonChain/serde-reflection
[INFO] finished tweaking git repo https://github.com/UnisonChain/serde-reflection
[INFO] tweaked toml for git repo https://github.com/UnisonChain/serde-reflection written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/UnisonChain/serde-reflection 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 git repo https://github.com/UnisonChain/serde-reflection 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4c7e22a0e87ce4c80732cdb7eecb4b8110a003be00829b374b08f75d96e87935
[INFO] running `Command { std: "docker" "start" "-a" "4c7e22a0e87ce4c80732cdb7eecb4b8110a003be00829b374b08f75d96e87935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c7e22a0e87ce4c80732cdb7eecb4b8110a003be00829b374b08f75d96e87935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c7e22a0e87ce4c80732cdb7eecb4b8110a003be00829b374b08f75d96e87935", kill_on_drop: false }`
[INFO] [stdout] 4c7e22a0e87ce4c80732cdb7eecb4b8110a003be00829b374b08f75d96e87935
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4b644e16302e0126a0c1d8bdf7d2da51a9643b25b6e51ccd1a53d7116e41ced4
[INFO] running `Command { std: "docker" "start" "-a" "4b644e16302e0126a0c1d8bdf7d2da51a9643b25b6e51ccd1a53d7116e41ced4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling include_dir_impl v0.6.0
[INFO] [stderr]     Checking include_dir v0.6.0
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking serde v1.0.193
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking serde-reflection v0.3.5 (/opt/rustwide/workdir/serde-reflection)
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking bcs v0.1.3
[INFO] [stderr]     Checking serde-name v0.2.0 (/opt/rustwide/workdir/serde-name)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> serde-reflection/src/format.rs:336:19
[INFO] [stdout]     |
[INFO] [stdout] 336 |     pub fn borrow(&self) -> Ref<Option<T>> {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 336 |     pub fn borrow(&self) -> Ref<'_, Option<T>> {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> serde-reflection/src/format.rs:340:23
[INFO] [stdout]     |
[INFO] [stdout] 340 |     pub fn borrow_mut(&self) -> RefMut<Option<T>> {
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 340 |     pub fn borrow_mut(&self) -> RefMut<'_, Option<T>> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> serde-name/tests/trace.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct NewType(u64);
[INFO] [stdout]    |        ------- ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> serde-name/tests/trace.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Tuple(u64, u32);
[INFO] [stdout]    |        ----- ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde-generate v0.20.6 (/opt/rustwide/workdir/serde-generate)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> serde-name/tests/de_adapter.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct NewType(u64);
[INFO] [stdout]    |        ------- ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> serde-name/tests/de_adapter.rs:23:14
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Tuple(u64, u32);
[INFO] [stdout]    |        ----- ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> serde-reflection/src/format.rs:336:19
[INFO] [stdout]     |
[INFO] [stdout] 336 |     pub fn borrow(&self) -> Ref<Option<T>> {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 336 |     pub fn borrow(&self) -> Ref<'_, Option<T>> {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> serde-reflection/src/format.rs:340:23
[INFO] [stdout]     |
[INFO] [stdout] 340 |     pub fn borrow_mut(&self) -> RefMut<Option<T>> {
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 340 |     pub fn borrow_mut(&self) -> RefMut<'_, Option<T>> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> serde-generate/src/generate.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | /     /// Directory where to write generated modules (otherwise print code on stdout).
[INFO] [stdout] 57 | |     #[structopt(long)]
[INFO] [stdout] 58 | |     target_source_dir: Option<PathBuf>,
[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]   --> serde-generate/src/generate.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | /     /// Module name for the Serde formats installed in the `target_source_dir`.
[INFO] [stdout] 66 | |     /// Rust crates may contain a version number separated with a colon, e.g. "test:1.2.0".
[INFO] [stdout] 67 | |     /// (By default, the installer will use version "0.1.0".)
[INFO] [stdout] 68 | |     #[structopt(long)]
[INFO] [stdout] 69 | |     module_name: 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]   --> serde-generate/src/generate.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | /     /// Optional package name (Python) or module path (Go) where to find Serde runtime dependencies.
[INFO] [stdout] 72 | |     #[structopt(long)]
[INFO] [stdout] 73 | |     serde_package_name: Option<String>,
[INFO] [stdout]    | |______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde-generate` (bin "serdegen") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> serde-generate/src/generate.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | /     /// Directory where to write generated modules (otherwise print code on stdout).
[INFO] [stdout] 57 | |     #[structopt(long)]
[INFO] [stdout] 58 | |     target_source_dir: Option<PathBuf>,
[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]   --> serde-generate/src/generate.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | /     /// Module name for the Serde formats installed in the `target_source_dir`.
[INFO] [stdout] 66 | |     /// Rust crates may contain a version number separated with a colon, e.g. "test:1.2.0".
[INFO] [stdout] 67 | |     /// (By default, the installer will use version "0.1.0".)
[INFO] [stdout] 68 | |     #[structopt(long)]
[INFO] [stdout] 69 | |     module_name: 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]   --> serde-generate/src/generate.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | /     /// Optional package name (Python) or module path (Go) where to find Serde runtime dependencies.
[INFO] [stdout] 72 | |     #[structopt(long)]
[INFO] [stdout] 73 | |     serde_package_name: Option<String>,
[INFO] [stdout]    | |______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde-generate` (bin "serdegen" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4b644e16302e0126a0c1d8bdf7d2da51a9643b25b6e51ccd1a53d7116e41ced4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b644e16302e0126a0c1d8bdf7d2da51a9643b25b6e51ccd1a53d7116e41ced4", kill_on_drop: false }`
[INFO] [stdout] 4b644e16302e0126a0c1d8bdf7d2da51a9643b25b6e51ccd1a53d7116e41ced4
