[INFO] fetching crate syn-args 0.4.0...
[INFO] checking syn-args-0.4.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate syn-args 0.4.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate syn-args 0.4.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn-args 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate syn-args 0.4.0
[INFO] tweaked toml for crates.io crate syn-args 0.4.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate syn-args 0.4.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fe79a1073adb161eadb4f09ce21d26075bb78c2b0b5f8034489ac97d66eb1a9
[INFO] running `Command { std: "docker" "start" "-a" "8fe79a1073adb161eadb4f09ce21d26075bb78c2b0b5f8034489ac97d66eb1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fe79a1073adb161eadb4f09ce21d26075bb78c2b0b5f8034489ac97d66eb1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fe79a1073adb161eadb4f09ce21d26075bb78c2b0b5f8034489ac97d66eb1a9", kill_on_drop: false }`
[INFO] [stdout] 8fe79a1073adb161eadb4f09ce21d26075bb78c2b0b5f8034489ac97d66eb1a9
[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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98c9f3fa8e6979784814dd6c1c417117bcf2697e03b52239d5ad25e16b9d3cbd
[INFO] running `Command { std: "docker" "start" "-a" "98c9f3fa8e6979784814dd6c1c417117bcf2697e03b52239d5ad25e16b9d3cbd", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]    Compiling syn-args-derive v0.3.0
[INFO] [stderr]     Checking syn-args v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/macro_args/def/extends.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn try_from(value: &Value) -> Result<Self, Self::Error> {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/macro_args/def/extends.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn try_from(value: &Value) -> Result<Self, Self::Error> {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |             if let Value::Array(args) = v {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:42:31
[INFO] [stdout]    |
[INFO] [stdout] 42 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:47:31
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:52:31
[INFO] [stdout]    |
[INFO] [stdout] 52 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 57 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:62:31
[INFO] [stdout]    |
[INFO] [stdout] 62 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:67:31
[INFO] [stdout]    |
[INFO] [stdout] 67 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:72:31
[INFO] [stdout]    |
[INFO] [stdout] 72 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]   --> src/lib.rs:77:31
[INFO] [stdout]    |
[INFO] [stdout] 77 |                     Err(e) => err = e,
[INFO] [stdout]    |                               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `T1` is more private than the item `ModuleArgs::F8::0`
[INFO] [stdout]    --> src/lib.rs:32:12
[INFO] [stdout]     |
[INFO] [stdout] 32  |         F8(def::Option<T1>),
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ field `ModuleArgs::F8::0` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `T1` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/lib.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 266 |     struct T1 {
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_value_p1` is never used
[INFO] [stdout]    --> src/lib.rs:463:8
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn test_value_p1() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `T1` is more private than the item `ModuleArgs::F8::0`
[INFO] [stdout]   --> examples/test.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     F8(def::Option<T1>),
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^ field `ModuleArgs::F8::0` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `T1` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> examples/test.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct T1 {
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_value_p1` is never used
[INFO] [stdout]    --> examples/test.rs:189:4
[INFO] [stdout]     |
[INFO] [stdout] 189 | fn test_value_p1() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.84s
[INFO] running `Command { std: "docker" "inspect" "98c9f3fa8e6979784814dd6c1c417117bcf2697e03b52239d5ad25e16b9d3cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98c9f3fa8e6979784814dd6c1c417117bcf2697e03b52239d5ad25e16b9d3cbd", kill_on_drop: false }`
[INFO] [stdout] 98c9f3fa8e6979784814dd6c1c417117bcf2697e03b52239d5ad25e16b9d3cbd