[INFO] fetching crate drophost 0.4.2...
[INFO] testing drophost-0.4.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate drophost 0.4.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate drophost 0.4.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drophost 0.4.2
[INFO] finished tweaking crates.io crate drophost 0.4.2
[INFO] tweaked toml for crates.io crate drophost 0.4.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate drophost 0.4.2 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anstyle-wincon v1.0.0
[INFO] [stderr]   Downloaded compile_warning v0.1.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.22
[INFO] [stderr]   Downloaded oping v0.4.0
[INFO] [stderr]   Downloaded network-interface v1.0.0
[INFO] [stderr]   Downloaded clap v4.2.4
[INFO] [stderr]   Downloaded clap_builder v4.2.4
[INFO] [stderr]   Downloaded rustix v0.37.7
[INFO] [stderr]   Downloaded anstream v0.3.0
[INFO] [stderr]   Downloaded iprange v0.6.7
[INFO] [stderr]   Downloaded notify v5.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6a8817696ba1022a3afe9dd6a4d08b35731a2be9b6132b4cf774ed897d1c69f
[INFO] running `Command { std: "docker" "start" "-a" "c6a8817696ba1022a3afe9dd6a4d08b35731a2be9b6132b4cf774ed897d1c69f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6a8817696ba1022a3afe9dd6a4d08b35731a2be9b6132b4cf774ed897d1c69f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a8817696ba1022a3afe9dd6a4d08b35731a2be9b6132b4cf774ed897d1c69f", kill_on_drop: false }`
[INFO] [stdout] c6a8817696ba1022a3afe9dd6a4d08b35731a2be9b6132b4cf774ed897d1c69f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef041d26566818e8d359d42e4f999d37bc21226e851bec66a6df3a6906582f7f
[INFO] running `Command { std: "docker" "start" "-a" "ef041d26566818e8d359d42e4f999d37bc21226e851bec66a6df3a6906582f7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling rustix v0.37.7
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling linux-raw-sys v0.3.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling anstyle v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling clap_lex v0.4.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling walkdir v2.3.3
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling crossbeam-channel v0.5.7
[INFO] [stderr]    Compiling syn v2.0.13
[INFO] [stderr]    Compiling regex v1.7.3
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.20
[INFO] [stderr]    Compiling mio v0.8.6
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling nix v0.26.2
[INFO] [stderr]    Compiling inotify v0.9.6
[INFO] [stderr]    Compiling notify v5.1.0
[INFO] [stderr]    Compiling is-terminal v0.4.6
[INFO] [stderr]    Compiling anstream v0.3.0
[INFO] [stderr]    Compiling env_logger v0.10.0
[INFO] [stderr]    Compiling clap_builder v4.2.4
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]    Compiling tokio-macros v2.0.0
[INFO] [stderr]    Compiling clap v4.2.4
[INFO] [stderr]    Compiling drophost v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused implementer of `Future` that must be used
[INFO] [stdout]    --> src/main.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 watch();
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.54s
[INFO] running `Command { std: "docker" "inspect" "ef041d26566818e8d359d42e4f999d37bc21226e851bec66a6df3a6906582f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef041d26566818e8d359d42e4f999d37bc21226e851bec66a6df3a6906582f7f", kill_on_drop: false }`
[INFO] [stdout] ef041d26566818e8d359d42e4f999d37bc21226e851bec66a6df3a6906582f7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e54fb40eed9457d8e2828981a41721b12b8db66883672ae511277a186cbe6942
[INFO] running `Command { std: "docker" "start" "-a" "e54fb40eed9457d8e2828981a41721b12b8db66883672ae511277a186cbe6942", kill_on_drop: false }`
[INFO] [stderr]    Compiling compile_warning v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/compile_warning-0.1.0/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compile_warning` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e54fb40eed9457d8e2828981a41721b12b8db66883672ae511277a186cbe6942", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e54fb40eed9457d8e2828981a41721b12b8db66883672ae511277a186cbe6942", kill_on_drop: false }`
[INFO] [stdout] e54fb40eed9457d8e2828981a41721b12b8db66883672ae511277a186cbe6942
