[INFO] fetching crate tmuntaner-keyring 0.1.0-alpha.15...
[INFO] building tmuntaner-keyring-0.1.0-alpha.15 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate tmuntaner-keyring 0.1.0-alpha.15 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate tmuntaner-keyring 0.1.0-alpha.15
[INFO] finished tweaking crates.io crate tmuntaner-keyring 0.1.0-alpha.15
[INFO] tweaked toml for crates.io crate tmuntaner-keyring 0.1.0-alpha.15 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tmuntaner-keyring 0.1.0-alpha.15 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 tmuntaner-keyring 0.1.0-alpha.15 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]  Downloading crates ...
[INFO] [stderr]   Downloaded enumflags2_derive v0.7.4
[INFO] [stderr]   Downloaded zbus_macros v3.5.0
[INFO] [stderr]   Downloaded digest v0.10.6
[INFO] [stderr]   Downloaded zbus_names v2.3.0
[INFO] [stderr]   Downloaded enumflags2 v0.7.5
[INFO] [stderr]   Downloaded zvariant_derive v3.8.0
[INFO] [stderr]   Downloaded uds_windows v1.0.2
[INFO] [stderr]   Downloaded async-task v4.3.0
[INFO] [stderr]   Downloaded async-broadcast v0.4.1
[INFO] [stderr]   Downloaded ordered-stream v0.1.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.74
[INFO] [stderr]   Downloaded zbus v3.5.0
[INFO] [stderr]   Downloaded widestring v1.0.0
[INFO] [stderr]   Downloaded async-executor v1.4.1
[INFO] [stderr]   Downloaded aes v0.8.1
[INFO] [stderr]   Downloaded openssl v0.10.40
[INFO] [stderr]   Downloaded async-io v1.7.0
[INFO] [stderr]   Downloaded serde_repr v0.1.9
[INFO] [stderr]   Downloaded crypto-common v0.1.3
[INFO] [stderr]   Downloaded async-channel v1.7.1
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded polling v2.2.0
[INFO] [stderr]   Downloaded async-recursion v1.0.0
[INFO] [stderr]   Downloaded slab v0.4.6
[INFO] [stderr]   Downloaded windows v0.43.0
[INFO] [stderr]   Downloaded zvariant v3.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] fc48a6c7e2f4334d0efd5f789c10dc4e7cd787608d1d22a78ade9cec1260e0e9
[INFO] running `Command { std: "docker" "start" "-a" "fc48a6c7e2f4334d0efd5f789c10dc4e7cd787608d1d22a78ade9cec1260e0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc48a6c7e2f4334d0efd5f789c10dc4e7cd787608d1d22a78ade9cec1260e0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc48a6c7e2f4334d0efd5f789c10dc4e7cd787608d1d22a78ade9cec1260e0e9", kill_on_drop: false }`
[INFO] [stdout] fc48a6c7e2f4334d0efd5f789c10dc4e7cd787608d1d22a78ade9cec1260e0e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 765d9b4164bb3fe2de5c8eca49369ca2efccbfc85b2dde92b1d074c782b418af
[INFO] running `Command { std: "docker" "start" "-a" "765d9b4164bb3fe2de5c8eca49369ca2efccbfc85b2dde92b1d074c782b418af", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling crypto-common v0.1.3
[INFO] [stderr]    Compiling block-padding v0.3.2
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling async-trait v0.1.58
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling digest v0.10.6
[INFO] [stderr]    Compiling inout v0.1.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 regex-syntax v0.6.28
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling cipher v0.4.3
[INFO] [stderr]    Compiling async-task v4.3.0
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling sha1 v0.10.5
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling async-channel v1.7.1
[INFO] [stderr]    Compiling ordered-stream v0.1.1
[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" "765d9b4164bb3fe2de5c8eca49369ca2efccbfc85b2dde92b1d074c782b418af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "765d9b4164bb3fe2de5c8eca49369ca2efccbfc85b2dde92b1d074c782b418af", kill_on_drop: false }`
[INFO] [stdout] 765d9b4164bb3fe2de5c8eca49369ca2efccbfc85b2dde92b1d074c782b418af