[INFO] cloning repository https://github.com/holly-hacker/mastodon-block-enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/holly-hacker/mastodon-block-enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fholly-hacker%2Fmastodon-block-enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fholly-hacker%2Fmastodon-block-enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54089bd22c20296d865c325b388bed399ef7e9b5
[INFO] testing holly-hacker/mastodon-block-enum against try#7af779037716ae4125ceabb429791b4cf5dd0a43 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fholly-hacker%2Fmastodon-block-enum" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/holly-hacker/mastodon-block-enum on toolchain 7af779037716ae4125ceabb429791b4cf5dd0a43
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/holly-hacker/mastodon-block-enum
[INFO] finished tweaking git repo https://github.com/holly-hacker/mastodon-block-enum
[INFO] tweaked toml for git repo https://github.com/holly-hacker/mastodon-block-enum written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/holly-hacker/mastodon-block-enum 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" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.58
[INFO] [stderr]   Downloaded security-framework v2.9.0
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] [stderr]   Downloaded syn v2.0.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32755a5b9d6f9f44fd4c633d8fc92c97711543f5d2aa0b915974549a81acf719
[INFO] running `Command { std: "docker" "start" "-a" "32755a5b9d6f9f44fd4c633d8fc92c97711543f5d2aa0b915974549a81acf719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32755a5b9d6f9f44fd4c633d8fc92c97711543f5d2aa0b915974549a81acf719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32755a5b9d6f9f44fd4c633d8fc92c97711543f5d2aa0b915974549a81acf719", kill_on_drop: false }`
[INFO] [stdout] 32755a5b9d6f9f44fd4c633d8fc92c97711543f5d2aa0b915974549a81acf719
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ff0f2ad5fc62475e39f7dfb2d43c197ff419cb4633c22e41d8f8f1f91c3e3d3
[INFO] running `Command { std: "docker" "start" "-a" "2ff0f2ad5fc62475e39f7dfb2d43c197ff419cb4633c22e41d8f8f1f91c3e3d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling tracing-core v0.1.31
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling tokio v1.28.1
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 tracing v0.1.37
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2ff0f2ad5fc62475e39f7dfb2d43c197ff419cb4633c22e41d8f8f1f91c3e3d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ff0f2ad5fc62475e39f7dfb2d43c197ff419cb4633c22e41d8f8f1f91c3e3d3", kill_on_drop: false }`
[INFO] [stdout] 2ff0f2ad5fc62475e39f7dfb2d43c197ff419cb4633c22e41d8f8f1f91c3e3d3