[INFO] fetching crate testground 0.4.0...
[INFO] checking testground-0.4.0 against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] extracting crate testground 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate testground 0.4.0
[INFO] finished tweaking crates.io crate testground 0.4.0
[INFO] tweaked toml for crates.io crate testground 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate testground 0.4.0 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 crates.io crate testground 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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b310b0f5419b03434fc7b86e811cd7590b36d312fb97631497d9285e41f64bc
[INFO] running `Command { std: "docker" "start" "-a" "5b310b0f5419b03434fc7b86e811cd7590b36d312fb97631497d9285e41f64bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b310b0f5419b03434fc7b86e811cd7590b36d312fb97631497d9285e41f64bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b310b0f5419b03434fc7b86e811cd7590b36d312fb97631497d9285e41f64bc", kill_on_drop: false }`
[INFO] [stdout] 5b310b0f5419b03434fc7b86e811cd7590b36d312fb97631497d9285e41f64bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58f64a3106c6271f0f50e7986d63a7f24a826df1d6bcf64e3cf2263759380428
[INFO] running `Command { std: "docker" "start" "-a" "58f64a3106c6271f0f50e7986d63a7f24a826df1d6bcf64e3cf2263759380428", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.41
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling tokio v1.20.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking if-addrs v0.7.0
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking unicode-normalization v0.1.21
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling darling_core v0.14.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling clap_derive v3.2.7
[INFO] [stderr]    Compiling influxdb_derive v0.5.0
[INFO] [stderr]    Compiling serde_repr v0.1.8
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]    Compiling darling_macro v0.14.1
[INFO] [stderr]    Compiling darling v0.14.1
[INFO] [stderr]    Compiling serde_with_macros v2.0.0
[INFO] [stderr]     Checking clap v3.2.14
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking soketto v0.7.1
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tokio-stream v0.1.9
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ipnetwork v0.20.0
[INFO] [stderr]     Checking serde_with v2.0.0
[INFO] [stderr]     Checking hyper v0.14.20
[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-0.14.20/src/proto/h2/mod.rs:452:5
[INFO] [stdout]     |
[INFO] [stdout] 452 |     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" "58f64a3106c6271f0f50e7986d63a7f24a826df1d6bcf64e3cf2263759380428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58f64a3106c6271f0f50e7986d63a7f24a826df1d6bcf64e3cf2263759380428", kill_on_drop: false }`
[INFO] [stdout] 58f64a3106c6271f0f50e7986d63a7f24a826df1d6bcf64e3cf2263759380428
