[INFO] fetching crate clacks_tl_codegen 0.0.5...
[INFO] checking clacks_tl_codegen-0.0.5 against master#e59540968e0c6fc3c37d92a639b83fc8fcee5e81 for pr-114559
[INFO] extracting crate clacks_tl_codegen 0.0.5 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate clacks_tl_codegen 0.0.5 on toolchain e59540968e0c6fc3c37d92a639b83fc8fcee5e81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate clacks_tl_codegen 0.0.5
[INFO] finished tweaking crates.io crate clacks_tl_codegen 0.0.5
[INFO] tweaked toml for crates.io crate clacks_tl_codegen 0.0.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v0.5.2
[INFO] [stderr]   Downloaded proc-macro2 v0.3.8
[INFO] [stderr]   Downloaded extprim v1.7.1
[INFO] [stderr]   Downloaded syntex_pos v0.59.1
[INFO] [stderr]   Downloaded syntex_syntax v0.59.1
[INFO] [stderr]   Downloaded syn v0.13.11
[INFO] [stderr]   Downloaded strings v0.1.1
[INFO] [stderr]   Downloaded syntex_errors v0.59.1
[INFO] [stderr]   Downloaded derivative v1.0.4
[INFO] [stderr]   Downloaded rustfmt v0.10.0
[INFO] [stderr]   Downloaded pom v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 969331b02d333e465038598943243cc524d2fb1349268c2a49647cdc69f0d2bb
[INFO] running `Command { std: "docker" "start" "-a" "969331b02d333e465038598943243cc524d2fb1349268c2a49647cdc69f0d2bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "969331b02d333e465038598943243cc524d2fb1349268c2a49647cdc69f0d2bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "969331b02d333e465038598943243cc524d2fb1349268c2a49647cdc69f0d2bb", kill_on_drop: false }`
[INFO] [stdout] 969331b02d333e465038598943243cc524d2fb1349268c2a49647cdc69f0d2bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd44b927e2f1d9ecc5b91cdd53d2431c888a68fd8b7a741d41a5b639cfa03d4f
[INFO] running `Command { std: "docker" "start" "-a" "dd44b927e2f1d9ecc5b91cdd53d2431c888a68fd8b7a741d41a5b639cfa03d4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking pom v1.1.0
[INFO] [stderr]     Checking proc-macro2 v0.3.8
[INFO] [stderr]     Checking quote v0.5.2
[INFO] [stderr]     Checking syn v0.13.11
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]     Checking clacks_tl_codegen v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |           ( sym(b'#').map(|_| Type::Int) |
[INFO] [stdout]     |           ^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |             dotted_ident().map(Type::Named)
[INFO] [stdout]     |  __________________________________________^
[INFO] [stdout] 158 | |         )
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 153 ~         sym(b'#').map(|_| Type::Int) |
[INFO] [stdout] 154 |           sym(b'!') * ident().map(Type::TypeParameter) |
[INFO] [stdout] 155 |           ty_flag() |
[INFO] [stdout] 156 |           ty_generic() |
[INFO] [stdout] 157 ~           dotted_ident().map(Type::Named)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |         (space_generic.map(|(name, ty)| Type::Generic(name, Box::new(ty))) |
[INFO] [stdout]     |         ^
[INFO] [stdout] 164 |          ty())
[INFO] [stdout]     |              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 163 ~         space_generic.map(|(name, ty)| Type::Generic(name, Box::new(ty))) |
[INFO] [stdout] 164 ~          ty()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:180:9
[INFO] [stdout]     |
[INFO] [stdout] 180 |         ( repeated_field() |
[INFO] [stdout]     |         ^^
[INFO] [stdout] 181 |           base_field() |
[INFO] [stdout] 182 |           ty().map(|ty| Field { name: None, ty: ty }))
[INFO] [stdout]     |                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 180 ~         repeated_field() |
[INFO] [stdout] 181 |           base_field() |
[INFO] [stdout] 182 ~           ty().map(|ty| Field { name: None, ty: ty })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |           ( seq(b"---types---").map(|_| Delimiter::Types) |
[INFO] [stdout]     |           ^^
[INFO] [stdout] 221 |             seq(b"---functions---").map(|_| Delimiter::Functions)
[INFO] [stdout]     |  ________________________________________________________________^
[INFO] [stdout] 222 | |         )
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 220 ~         seq(b"---types---").map(|_| Delimiter::Types) |
[INFO] [stdout] 221 ~           seq(b"---functions---").map(|_| Delimiter::Functions)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |           ( sym(b'#').map(|_| Type::Int) |
[INFO] [stdout]     |           ^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |             dotted_ident().map(Type::Named)
[INFO] [stdout]     |  __________________________________________^
[INFO] [stdout] 158 | |         )
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 153 ~         sym(b'#').map(|_| Type::Int) |
[INFO] [stdout] 154 |           sym(b'!') * ident().map(Type::TypeParameter) |
[INFO] [stdout] 155 |           ty_flag() |
[INFO] [stdout] 156 |           ty_generic() |
[INFO] [stdout] 157 ~           dotted_ident().map(Type::Named)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |         (space_generic.map(|(name, ty)| Type::Generic(name, Box::new(ty))) |
[INFO] [stdout]     |         ^
[INFO] [stdout] 164 |          ty())
[INFO] [stdout]     |              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 163 ~         space_generic.map(|(name, ty)| Type::Generic(name, Box::new(ty))) |
[INFO] [stdout] 164 ~          ty()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:180:9
[INFO] [stdout]     |
[INFO] [stdout] 180 |         ( repeated_field() |
[INFO] [stdout]     |         ^^
[INFO] [stdout] 181 |           base_field() |
[INFO] [stdout] 182 |           ty().map(|ty| Field { name: None, ty: ty }))
[INFO] [stdout]     |                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 180 ~         repeated_field() |
[INFO] [stdout] 181 |           base_field() |
[INFO] [stdout] 182 ~           ty().map(|ty| Field { name: None, ty: ty })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |           ( seq(b"---types---").map(|_| Delimiter::Types) |
[INFO] [stdout]     |           ^^
[INFO] [stdout] 221 |             seq(b"---functions---").map(|_| Delimiter::Functions)
[INFO] [stdout]     |  ________________________________________________________________^
[INFO] [stdout] 222 | |         )
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 220 ~         seq(b"---types---").map(|_| Delimiter::Types) |
[INFO] [stdout] 221 ~           seq(b"---functions---").map(|_| Delimiter::Functions)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1548:59
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn constructors_and_tl_ids<'this>(&'this self) -> Box<'this + Iterator<Item = (quote::Tokens, &'this Constructor<TypeIR, FieldIR>)>> {
[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: use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn constructors_and_tl_ids<'this>(&'this self) -> Box<dyn 'this + Iterator<Item = (quote::Tokens, &'this Constructor<TypeIR, FieldIR>)>> {
[INFO] [stdout]      |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1548:59
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn constructors_and_tl_ids<'this>(&'this self) -> Box<'this + Iterator<Item = (quote::Tokens, &'this Constructor<TypeIR, FieldIR>)>> {
[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: use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn constructors_and_tl_ids<'this>(&'this self) -> Box<dyn 'this + Iterator<Item = (quote::Tokens, &'this Constructor<TypeIR, FieldIR>)>> {
[INFO] [stdout]      |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:440:35
[INFO] [stdout]     |
[INFO] [stdout] 440 |                 Item::Constructor(mut c) => {
[INFO] [stdout]     |                                   ----^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:465:17
[INFO] [stdout]     |
[INFO] [stdout] 465 |             let mut cs = cs.resolve(&resolve_map);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:440:35
[INFO] [stdout]     |
[INFO] [stdout] 440 |                 Item::Constructor(mut c) => {
[INFO] [stdout]     |                                   ----^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:465:17
[INFO] [stdout]     |
[INFO] [stdout] 465 |             let mut cs = cs.resolve(&resolve_map);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:297:21
[INFO] [stdout]     |
[INFO] [stdout] 297 |                     &mut s[..1].make_ascii_uppercase();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 297 |                     let _ = &mut s[..1].make_ascii_uppercase();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:297:21
[INFO] [stdout]     |
[INFO] [stdout] 297 |                     &mut s[..1].make_ascii_uppercase();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 297 |                     let _ = &mut s[..1].make_ascii_uppercase();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.52s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.13.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "dd44b927e2f1d9ecc5b91cdd53d2431c888a68fd8b7a741d41a5b639cfa03d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd44b927e2f1d9ecc5b91cdd53d2431c888a68fd8b7a741d41a5b639cfa03d4f", kill_on_drop: false }`
[INFO] [stdout] dd44b927e2f1d9ecc5b91cdd53d2431c888a68fd8b7a741d41a5b639cfa03d4f
