[INFO] fetching crate ssfs 0.1.0...
[INFO] building ssfs-0.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate ssfs 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ssfs 0.1.0
[INFO] finished tweaking crates.io crate ssfs 0.1.0
[INFO] tweaked toml for crates.io crate ssfs 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ssfs 0.1.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ssfs 0.1.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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 tokio-rustls v0.24.0
[INFO] [stderr]   Downloaded language-tags v0.3.2
[INFO] [stderr]   Downloaded actix-utils v3.0.1
[INFO] [stderr]   Downloaded env_logger v0.10.0
[INFO] [stderr]   Downloaded errno v0.3.1
[INFO] [stderr]   Downloaded io-lifetimes v1.0.10
[INFO] [stderr]   Downloaded is-terminal v0.4.7
[INFO] [stderr]   Downloaded rustls v0.21.0
[INFO] [stderr]   Downloaded askama_escape v0.10.3
[INFO] [stderr]   Downloaded http-range v0.1.5
[INFO] [stderr]   Downloaded actix-server v2.2.0
[INFO] [stderr]   Downloaded actix-files v0.6.2
[INFO] [stderr]   Downloaded zstd v0.12.3+zstd.1.5.2
[INFO] [stderr]   Downloaded actix-service v2.0.2
[INFO] [stderr]   Downloaded actix-router v0.5.1
[INFO] [stderr]   Downloaded actix-codec v0.5.0
[INFO] [stderr]   Downloaded rustix v0.37.11
[INFO] [stderr]   Downloaded actix-rt v2.8.0
[INFO] [stderr]   Downloaded libc v0.2.141
[INFO] [stderr]   Downloaded actix-tls v3.0.3
[INFO] [stderr]   Downloaded bytestring v1.3.0
[INFO] [stderr]   Downloaded actix-web v4.3.1
[INFO] [stderr]   Downloaded argh_derive v0.1.10
[INFO] [stderr]   Downloaded actix-http v3.3.1
[INFO] [stderr]   Downloaded ahash v0.8.3
[INFO] [stderr]   Downloaded sha1 v0.10.5
[INFO] [stderr]   Downloaded zstd-safe v6.0.5+zstd.1.5.4
[INFO] [stderr]   Downloaded actix-macros v0.2.3
[INFO] [stderr]   Downloaded local-waker v0.1.3
[INFO] [stderr]   Downloaded argh_shared v0.1.10
[INFO] [stderr]   Downloaded argh v0.1.10
[INFO] [stderr]   Downloaded rustls-webpki v0.100.1
[INFO] [stderr]   Downloaded local-channel v0.1.3
[INFO] [stderr]   Downloaded actix-web-codegen v4.2.0
[INFO] [stderr]   Downloaded getrandom v0.2.9
[INFO] [stderr]   Downloaded cookie v0.16.2
[INFO] [stderr]   Downloaded zstd-sys v2.0.8+zstd.1.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bb0f256178c9c16111be3ac29e083033f87540a1977820c2aad80e7d6ee9f8f
[INFO] running `Command { std: "docker" "start" "-a" "1bb0f256178c9c16111be3ac29e083033f87540a1977820c2aad80e7d6ee9f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bb0f256178c9c16111be3ac29e083033f87540a1977820c2aad80e7d6ee9f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bb0f256178c9c16111be3ac29e083033f87540a1977820c2aad80e7d6ee9f8f", kill_on_drop: false }`
[INFO] [stdout] 1bb0f256178c9c16111be3ac29e083033f87540a1977820c2aad80e7d6ee9f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 903b182835a382bfb81a0ff8d86ca3383693839637b139bfaf3e619c41ac3853
[INFO] running `Command { std: "docker" "start" "-a" "903b182835a382bfb81a0ff8d86ca3383693839637b139bfaf3e619c41ac3853", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling pkg-config 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-macro2-1.0.56/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 futures-task v0.3.28
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling paste v1.0.12
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling local-waker v0.1.3
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[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" "903b182835a382bfb81a0ff8d86ca3383693839637b139bfaf3e619c41ac3853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "903b182835a382bfb81a0ff8d86ca3383693839637b139bfaf3e619c41ac3853", kill_on_drop: false }`
[INFO] [stdout] 903b182835a382bfb81a0ff8d86ca3383693839637b139bfaf3e619c41ac3853