[INFO] fetching crate futures-await-async-macro 0.1.4...
[INFO] testing futures-await-async-macro-0.1.4 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate futures-await-async-macro 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate futures-await-async-macro 0.1.4 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-await-async-macro 0.1.4
[INFO] finished tweaking crates.io crate futures-await-async-macro 0.1.4
[INFO] tweaked toml for crates.io crate futures-await-async-macro 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bc4b7421a16223d4623af5450a5c865262fd203a2fc2c6acde20bf2a8432463
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7bc4b7421a16223d4623af5450a5c865262fd203a2fc2c6acde20bf2a8432463", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bc4b7421a16223d4623af5450a5c865262fd203a2fc2c6acde20bf2a8432463", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc4b7421a16223d4623af5450a5c865262fd203a2fc2c6acde20bf2a8432463", kill_on_drop: false }`
[INFO] [stdout] 7bc4b7421a16223d4623af5450a5c865262fd203a2fc2c6acde20bf2a8432463
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e6e356e4467b1b89abff0f1a21d2ff792840fccf96ec23b1f1f191e4e9eb24a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5e6e356e4467b1b89abff0f1a21d2ff792840fccf96ec23b1f1f191e4e9eb24a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling futures-await-async-macro v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:466:24
[INFO] [stdout]     |
[INFO] [stdout] 466 | fn first_last(tokens: &ToTokens) -> (Span, Span) {
[INFO] [stdout]     |                        ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:494:59
[INFO] [stdout]     |
[INFO] [stdout] 494 | fn replace_bang(input: proc_macro2::TokenStream, tokens: &ToTokens) -> proc_macro2::TokenStream {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:507:19
[INFO] [stdout]     |
[INFO] [stdout] 507 |     replacements: &[&ToTokens],
[INFO] [stdout]     |                      ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:175:27
[INFO] [stdout]     |
[INFO] [stdout] 175 |     let mut result = Tokens::empty();
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 |     let mut gen_body = Tokens::empty();
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:211:25
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let mut body = Tokens::empty();
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:467:26
[INFO] [stdout]     |
[INFO] [stdout] 467 |     let mut spans = Tokens::empty();
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:495:31
[INFO] [stdout]     |
[INFO] [stdout] 495 |     let mut new_tokens = Tokens::empty();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:510:31
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let mut new_tokens = Tokens::empty();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(proc_macro)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.10s
[INFO] running `Command { std: "docker" "inspect" "5e6e356e4467b1b89abff0f1a21d2ff792840fccf96ec23b1f1f191e4e9eb24a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e6e356e4467b1b89abff0f1a21d2ff792840fccf96ec23b1f1f191e4e9eb24a", kill_on_drop: false }`
[INFO] [stdout] 5e6e356e4467b1b89abff0f1a21d2ff792840fccf96ec23b1f1f191e4e9eb24a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfff9bd1a2930dc7d168c8314d9de568f99599b55f61f4741df9138e8745fc73
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dfff9bd1a2930dc7d168c8314d9de568f99599b55f61f4741df9138e8745fc73", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-await-async-macro v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:466:24
[INFO] [stdout]     |
[INFO] [stdout] 466 | fn first_last(tokens: &ToTokens) -> (Span, Span) {
[INFO] [stdout]     |                        ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:494:59
[INFO] [stdout]     |
[INFO] [stdout] 494 | fn replace_bang(input: proc_macro2::TokenStream, tokens: &ToTokens) -> proc_macro2::TokenStream {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:507:19
[INFO] [stdout]     |
[INFO] [stdout] 507 |     replacements: &[&ToTokens],
[INFO] [stdout]     |                      ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:175:27
[INFO] [stdout]     |
[INFO] [stdout] 175 |     let mut result = Tokens::empty();
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 |     let mut gen_body = Tokens::empty();
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:211:25
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let mut body = Tokens::empty();
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:467:26
[INFO] [stdout]     |
[INFO] [stdout] 467 |     let mut spans = Tokens::empty();
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:495:31
[INFO] [stdout]     |
[INFO] [stdout] 495 |     let mut new_tokens = Tokens::empty();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:510:31
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let mut new_tokens = Tokens::empty();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(proc_macro)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:466:24
[INFO] [stdout]     |
[INFO] [stdout] 466 | fn first_last(tokens: &ToTokens) -> (Span, Span) {
[INFO] [stdout]     |                        ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:494:59
[INFO] [stdout]     |
[INFO] [stdout] 494 | fn replace_bang(input: proc_macro2::TokenStream, tokens: &ToTokens) -> proc_macro2::TokenStream {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:507:19
[INFO] [stdout]     |
[INFO] [stdout] 507 |     replacements: &[&ToTokens],
[INFO] [stdout]     |                      ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:175:27
[INFO] [stdout]     |
[INFO] [stdout] 175 |     let mut result = Tokens::empty();
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 |     let mut gen_body = Tokens::empty();
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:211:25
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let mut body = Tokens::empty();
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:467:26
[INFO] [stdout]     |
[INFO] [stdout] 467 |     let mut spans = Tokens::empty();
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:495:31
[INFO] [stdout]     |
[INFO] [stdout] 495 |     let mut new_tokens = Tokens::empty();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stdout]    --> src/lib.rs:510:31
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let mut new_tokens = Tokens::empty();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(proc_macro)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "dfff9bd1a2930dc7d168c8314d9de568f99599b55f61f4741df9138e8745fc73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfff9bd1a2930dc7d168c8314d9de568f99599b55f61f4741df9138e8745fc73", kill_on_drop: false }`
[INFO] [stdout] dfff9bd1a2930dc7d168c8314d9de568f99599b55f61f4741df9138e8745fc73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 77d9ce7ab4b68b8805c8e048f09d9633b3e101f6903d9121bbcd159e7006bde5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "77d9ce7ab4b68b8805c8e048f09d9633b3e101f6903d9121bbcd159e7006bde5", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:466:24
[INFO] [stderr]     |
[INFO] [stderr] 466 | fn first_last(tokens: &ToTokens) -> (Span, Span) {
[INFO] [stderr]     |                        ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:494:59
[INFO] [stderr]     |
[INFO] [stderr] 494 | fn replace_bang(input: proc_macro2::TokenStream, tokens: &ToTokens) -> proc_macro2::TokenStream {
[INFO] [stderr]     |                                                           ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:507:19
[INFO] [stderr]     |
[INFO] [stderr] 507 |     replacements: &[&ToTokens],
[INFO] [stderr]     |                      ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stderr]    --> src/lib.rs:175:27
[INFO] [stderr]     |
[INFO] [stderr] 175 |     let mut result = Tokens::empty();
[INFO] [stderr]     |                              ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stderr]    --> src/lib.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |     let mut gen_body = Tokens::empty();
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stderr]    --> src/lib.rs:211:25
[INFO] [stderr]     |
[INFO] [stderr] 211 |     let mut body = Tokens::empty();
[INFO] [stderr]     |                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stderr]    --> src/lib.rs:467:26
[INFO] [stderr]     |
[INFO] [stderr] 467 |     let mut spans = Tokens::empty();
[INFO] [stderr]     |                             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stderr]    --> src/lib.rs:495:31
[INFO] [stderr]     |
[INFO] [stderr] 495 |     let mut new_tokens = Tokens::empty();
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `proc_macro2::TokenStream::empty`: please use TokenStream::new
[INFO] [stderr]    --> src/lib.rs:510:31
[INFO] [stderr]     |
[INFO] [stderr] 510 |     let mut new_tokens = Tokens::empty();
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | #![feature(proc_macro)]
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `futures-await-async-macro` (lib) generated 11 warnings
[INFO] [stderr] warning: `futures-await-async-macro` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/futures_await_async_macro-7eea05161c5152a7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures-await-async-macro
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "77d9ce7ab4b68b8805c8e048f09d9633b3e101f6903d9121bbcd159e7006bde5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77d9ce7ab4b68b8805c8e048f09d9633b3e101f6903d9121bbcd159e7006bde5", kill_on_drop: false }`
[INFO] [stdout] 77d9ce7ab4b68b8805c8e048f09d9633b3e101f6903d9121bbcd159e7006bde5