[INFO] cloning repository https://github.com/jimblandy/book-async-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jimblandy/book-async-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fbook-async-examples", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fd491b39e12dd9ff2030664d62c0e99dea15b5b
[INFO] checking jimblandy/book-async-examples against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fbook-async-examples" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jimblandy/book-async-examples
[INFO] finished tweaking git repo https://github.com/jimblandy/book-async-examples
[INFO] tweaked toml for git repo https://github.com/jimblandy/book-async-examples written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jimblandy/book-async-examples on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jimblandy/book-async-examples 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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: function `copying_print` is never used
[INFO] [stdout]  --> explicit-futures/src/bin/credits-async-block.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn copying_print(message: &str) -> impl Future<Output = ()> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bad_print_lifetime` is never used
[INFO] [stdout]   --> explicit-futures/src/bin/credits-async-block.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | async fn bad_print_lifetime(star: &str, costar: &str) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copying_print` is never used
[INFO] [stdout]  --> explicit-futures/src/bin/credits-async-block.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn copying_print(message: &str) -> impl Future<Output = ()> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bad_print_lifetime` is never used
[INFO] [stdout]   --> explicit-futures/src/bin/credits-async-block.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | async fn bad_print_lifetime(star: &str, costar: &str) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `Future` that must be used
[INFO] [stdout]  --> dropped-futures/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     print("Bonnie");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking argh_shared v0.1.12
[INFO] [stdout] warning: unused implementer of `Future` that must be used
[INFO] [stdout]  --> dropped-futures/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     print("Bonnie");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking h2 v0.4.6
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.3
[INFO] [stderr]     Checking tungstenite v0.21.0
[INFO] [stderr]    Compiling argh_derive v0.1.12
[INFO] [stderr]     Checking tokio-tungstenite v0.21.0
[INFO] [stderr]     Checking argh v0.1.12
[INFO] [stderr]     Checking hyper v1.5.0
[INFO] [stderr]     Checking hyper v0.14.31
[INFO] [stdout] error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hyper-1.5.0/src/proto/h2/mod.rs:427:5
[INFO] [stdout]     |
[INFO] [stdout] 427 |     impossible: Impossible,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this field contains `Impossible`, which is not inhabited, and makes it not a breaking change to become non-zero-sized in the future.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hyper` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hyper-0.14.31/src/proto/h2/mod.rs:451:5
[INFO] [stdout]     |
[INFO] [stdout] 451 |     impossible: Impossible,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this field contains `Impossible`, which is not inhabited, and makes it not a breaking change to become non-zero-sized in the future.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hyper` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b0cdd30837f68b6ef6543bc622831aa4c82ca67d7ed7a91eac6889c4e2441073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0cdd30837f68b6ef6543bc622831aa4c82ca67d7ed7a91eac6889c4e2441073", kill_on_drop: false }`
[INFO] [stdout] b0cdd30837f68b6ef6543bc622831aa4c82ca67d7ed7a91eac6889c4e2441073
