[INFO] fetching crate varro 0.1.0-alpha...
[INFO] checking varro-0.1.0-alpha against try#377afada703be70d3fdff9164a481570a3cba7fe for pr-113240
[INFO] extracting crate varro 0.1.0-alpha into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate varro 0.1.0-alpha 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 varro 0.1.0-alpha
[INFO] finished tweaking crates.io crate varro 0.1.0-alpha
[INFO] tweaked toml for crates.io crate varro 0.1.0-alpha written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate varro 0.1.0-alpha 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8732330cd2995400275e3608c11e34f333e700ab1dd816fd50634f1edee81ead
[INFO] running `Command { std: "docker" "start" "-a" "8732330cd2995400275e3608c11e34f333e700ab1dd816fd50634f1edee81ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8732330cd2995400275e3608c11e34f333e700ab1dd816fd50634f1edee81ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8732330cd2995400275e3608c11e34f333e700ab1dd816fd50634f1edee81ead", kill_on_drop: false }`
[INFO] [stdout] 8732330cd2995400275e3608c11e34f333e700ab1dd816fd50634f1edee81ead
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5d4e2f72ccbad2f3e3d3dc1c44b7029ed714d22afe5b3debad1d516a2d5ca4c5
[INFO] running `Command { std: "docker" "start" "-a" "5d4e2f72ccbad2f3e3d3dc1c44b7029ed714d22afe5b3debad1d516a2d5ca4c5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]    Compiling winnow v0.3.6
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking futures-sink v0.3.27
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]    Compiling futures-channel v0.3.27
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking const-oid v0.9.2
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking der v0.6.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.52/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 futures-io v0.3.27
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]    Compiling openssl-sys v0.9.82
[INFO] [stderr]     Checking keccak v0.1.3
[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 base16ct v0.1.1
[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" "5d4e2f72ccbad2f3e3d3dc1c44b7029ed714d22afe5b3debad1d516a2d5ca4c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d4e2f72ccbad2f3e3d3dc1c44b7029ed714d22afe5b3debad1d516a2d5ca4c5", kill_on_drop: false }`
[INFO] [stdout] 5d4e2f72ccbad2f3e3d3dc1c44b7029ed714d22afe5b3debad1d516a2d5ca4c5