[INFO] fetching crate kube-leader-election 0.23.0...
[INFO] checking kube-leader-election-0.23.0 against try#377afada703be70d3fdff9164a481570a3cba7fe for pr-113240
[INFO] extracting crate kube-leader-election 0.23.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate kube-leader-election 0.23.0 on toolchain 377afada703be70d3fdff9164a481570a3cba7fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kube-leader-election 0.23.0
[INFO] finished tweaking crates.io crate kube-leader-election 0.23.0
[INFO] tweaked toml for crates.io crate kube-leader-election 0.23.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate kube-leader-election 0.23.0 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" "+377afada703be70d3fdff9164a481570a3cba7fe" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63321670ec3ea3e1aa01cbf2a7541795ce6906540fe553e682fc54fcfdb780e3
[INFO] running `Command { std: "docker" "start" "-a" "63321670ec3ea3e1aa01cbf2a7541795ce6906540fe553e682fc54fcfdb780e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63321670ec3ea3e1aa01cbf2a7541795ce6906540fe553e682fc54fcfdb780e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63321670ec3ea3e1aa01cbf2a7541795ce6906540fe553e682fc54fcfdb780e3", kill_on_drop: false }`
[INFO] [stdout] 63321670ec3ea3e1aa01cbf2a7541795ce6906540fe553e682fc54fcfdb780e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a6460a6db2623ab1c37a37e3e375cbe657427856c495f4be1ae245d8af5cf80
[INFO] running `Command { std: "docker" "start" "-a" "7a6460a6db2623ab1c37a37e3e375cbe657427856c495f4be1ae245d8af5cf80", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stderr]    Compiling openssl-sys v0.9.88
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling openssl v0.10.54
[INFO] [stderr]    Compiling k8s-openapi v0.18.0
[INFO] [stderr]    Compiling tokio-openssl v0.6.3
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling hyper-openssl v0.9.2
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/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]     Checking form_urlencoded v1.2.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7a6460a6db2623ab1c37a37e3e375cbe657427856c495f4be1ae245d8af5cf80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a6460a6db2623ab1c37a37e3e375cbe657427856c495f4be1ae245d8af5cf80", kill_on_drop: false }`
[INFO] [stdout] 7a6460a6db2623ab1c37a37e3e375cbe657427856c495f4be1ae245d8af5cf80