[INFO] fetching crate rstgen 0.1.4...
[INFO] checking rstgen-0.1.4 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate rstgen 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate rstgen 0.1.4 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 rstgen 0.1.4
[INFO] finished tweaking crates.io crate rstgen 0.1.4
[INFO] tweaked toml for crates.io crate rstgen 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 55ee97e7799a24a55fe66c4e29d68b53115af691674036bf3d1c70039a43069b
[INFO] running `Command { std: "docker" "start" "-a" "55ee97e7799a24a55fe66c4e29d68b53115af691674036bf3d1c70039a43069b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55ee97e7799a24a55fe66c4e29d68b53115af691674036bf3d1c70039a43069b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55ee97e7799a24a55fe66c4e29d68b53115af691674036bf3d1c70039a43069b", kill_on_drop: false }`
[INFO] [stdout] 55ee97e7799a24a55fe66c4e29d68b53115af691674036bf3d1c70039a43069b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 95a403e7f90dfefc4a64a2009cce5a98c81dd9907c8a02841795c96c8c04551d
[INFO] running `Command { std: "docker" "start" "-a" "95a403e7f90dfefc4a64a2009cce5a98c81dd9907c8a02841795c96c8c04551d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking rstgen v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Display` and `Pointer`
[INFO] [stdout]  --> src/element.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::{Debug, Display, Pointer};
[INFO] [stdout]   |                       ^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::modifier::Modifier`
[INFO] [stdout]  --> src/swift/argument.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::modifier::Modifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Java`
[INFO] [stdout]  --> src/swift/argument.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use Java;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::Cons`
[INFO] [stdout]  --> src/swift/constructor.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cons::Cons;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Name` and `local`
[INFO] [stdout]  --> src/swift/extension.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use swift::{local, Name, Swift};
[INFO] [stdout]   |             ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cons`
[INFO] [stdout]  --> src/swift/extension.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | use {Cons, IntoTokens};
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display` and `Pointer`
[INFO] [stdout]  --> src/element.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::{Debug, Display, Pointer};
[INFO] [stdout]   |                       ^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::modifier::Modifier`
[INFO] [stdout]  --> src/swift/argument.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::modifier::Modifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Java`
[INFO] [stdout]  --> src/swift/argument.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use Java;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::Cons`
[INFO] [stdout]   --> src/swift/argument.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     use cons::Cons;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `swift::Swift::Type`
[INFO] [stdout]   --> src/swift/argument.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     use swift::Swift::Type;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Name`
[INFO] [stdout]   --> src/swift/argument.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use swift::{local, Name, Swift};
[INFO] [stdout]    |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::Cons`
[INFO] [stdout]  --> src/swift/constructor.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cons::Cons;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::Cons`
[INFO] [stdout]   --> src/swift/constructor.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use cons::Cons;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Name` and `local`
[INFO] [stdout]  --> src/swift/extension.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use swift::{local, Name, Swift};
[INFO] [stdout]   |             ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cons`
[INFO] [stdout]  --> src/swift/extension.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | use {Cons, IntoTokens};
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/formatter.rs:19:24
[INFO] [stdout]    |
[INFO] [stdout] 19 |     write: &'write mut fmt::Write,
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |     write: &'write mut dyn fmt::Write,
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/formatter.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new(write: &mut fmt::Write) -> Formatter {
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new(write: &mut dyn fmt::Write) -> Formatter {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/formatter.rs:19:24
[INFO] [stdout]    |
[INFO] [stdout] 19 |     write: &'write mut fmt::Write,
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |     write: &'write mut dyn fmt::Write,
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/formatter.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new(write: &mut fmt::Write) -> Formatter {
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new(write: &mut dyn fmt::Write) -> Formatter {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `primitive`
[INFO] [stdout]    --> src/swift/mod.rs:118:25
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Primitive { primitive } => {
[INFO] [stdout]     |                         ^^^^^^^^^ help: try ignoring the field: `primitive: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `primitive`
[INFO] [stdout]    --> src/swift/mod.rs:118:25
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Primitive { primitive } => {
[INFO] [stdout]     |                         ^^^^^^^^^ help: try ignoring the field: `primitive: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "95a403e7f90dfefc4a64a2009cce5a98c81dd9907c8a02841795c96c8c04551d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a403e7f90dfefc4a64a2009cce5a98c81dd9907c8a02841795c96c8c04551d", kill_on_drop: false }`
[INFO] [stdout] 95a403e7f90dfefc4a64a2009cce5a98c81dd9907c8a02841795c96c8c04551d