[INFO] cloning repository https://github.com/alpaca-yogurt/mumble-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alpaca-yogurt/mumble-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falpaca-yogurt%2Fmumble-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falpaca-yogurt%2Fmumble-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2b5063ac176a38c1a80c88e15f59c510b23758a
[INFO] checking alpaca-yogurt/mumble-bot against try#94e848735e78b58442e0b82e9c60f8f430840389 for pr-149218
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falpaca-yogurt%2Fmumble-bot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/alpaca-yogurt/mumble-bot
[INFO] finished tweaking git repo https://github.com/alpaca-yogurt/mumble-bot
[INFO] tweaked toml for git repo https://github.com/alpaca-yogurt/mumble-bot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/alpaca-yogurt/mumble-bot on toolchain 94e848735e78b58442e0b82e9c60f8f430840389
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94e848735e78b58442e0b82e9c60f8f430840389" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/alpaca-yogurt/mumble-bot 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" "+94e848735e78b58442e0b82e9c60f8f430840389" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctor v0.1.26
[INFO] [stderr]   Downloaded typemap_rev v0.1.5
[INFO] [stderr]   Downloaded tokio-macros v1.8.2
[INFO] [stderr]   Downloaded tracing-attributes v0.1.23
[INFO] [stderr]   Downloaded serde v1.0.154
[INFO] [stderr]   Downloaded digest v0.10.6
[INFO] [stderr]   Downloaded async-channel v1.8.0
[INFO] [stderr]   Downloaded tungstenite v0.17.3
[INFO] [stderr]   Downloaded miniz_oxide v0.6.2
[INFO] [stderr]   Downloaded flate2 v1.0.25
[INFO] [stderr]   Downloaded h2 v0.3.16
[INFO] [stderr]   Downloaded time v0.3.20
[INFO] [stderr]   Downloaded futures v0.3.26
[INFO] [stderr]   Downloaded serde_json v1.0.94
[INFO] [stderr]   Downloaded mime_guess v2.0.4
[INFO] [stderr]   Downloaded futures-macro v0.3.26
[INFO] [stderr]   Downloaded wasm-streams v0.2.3
[INFO] [stderr]   Downloaded webpki-roots v0.22.6
[INFO] [stderr]   Downloaded unicode-bidi v0.3.11
[INFO] [stderr]   Downloaded rustls v0.20.8
[INFO] [stderr]   Downloaded rustix v0.37.3
[INFO] [stderr]   Downloaded serde_derive v1.0.154
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.15
[INFO] [stderr]   Downloaded async-trait v0.1.66
[INFO] [stderr]   Downloaded thiserror-impl v1.0.39
[INFO] [stderr]   Downloaded async-tungstenite v0.17.2
[INFO] [stderr]   Downloaded hyper-rustls v0.23.2
[INFO] [stderr]   Downloaded ordered-float v2.10.0
[INFO] [stderr]   Downloaded sha-1 v0.10.1
[INFO] [stderr]   Downloaded thiserror v1.0.39
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.2
[INFO] [stderr]   Downloaded time-macros v0.2.8
[INFO] [stderr]   Downloaded serenity v0.11.5
[INFO] [stderr]   Downloaded tokio v1.26.0
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+94e848735e78b58442e0b82e9c60f8f430840389" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1638db3c368eefa2fc58fc968c3f16f74ab272bfd11b458d1d1392bb737f42a
[INFO] running `Command { std: "docker" "start" "-a" "e1638db3c368eefa2fc58fc968c3f16f74ab272bfd11b458d1d1392bb737f42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1638db3c368eefa2fc58fc968c3f16f74ab272bfd11b458d1d1392bb737f42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1638db3c368eefa2fc58fc968c3f16f74ab272bfd11b458d1d1392bb737f42a", kill_on_drop: false }`
[INFO] [stdout] e1638db3c368eefa2fc58fc968c3f16f74ab272bfd11b458d1d1392bb737f42a
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+94e848735e78b58442e0b82e9c60f8f430840389" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8741e9b8149d0852f6d08b724c48434b18ab081e36d38cda423ef7b691fc5d1c
[INFO] running `Command { std: "docker" "start" "-a" "8741e9b8149d0852f6d08b724c48434b18ab081e36d38cda423ef7b691fc5d1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking futures-io v0.3.26
[INFO] [stderr]    Compiling serde_derive v1.0.154
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling serde v1.0.154
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8741e9b8149d0852f6d08b724c48434b18ab081e36d38cda423ef7b691fc5d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8741e9b8149d0852f6d08b724c48434b18ab081e36d38cda423ef7b691fc5d1c", kill_on_drop: false }`
[INFO] [stdout] 8741e9b8149d0852f6d08b724c48434b18ab081e36d38cda423ef7b691fc5d1c
