[INFO] cloning repository https://github.com/les-amateurs/Oversync
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/les-amateurs/Oversync" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fles-amateurs%2FOversync", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fles-amateurs%2FOversync'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0993677dbb4eaa58cf9c0a1683c8579aebb3dbc
[INFO] checking les-amateurs/Oversync/f0993677dbb4eaa58cf9c0a1683c8579aebb3dbc against master#9f32ccf35fb877270bc44a86a126440f04d676d0 for pr-140283
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fles-amateurs%2FOversync" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/les-amateurs/Oversync
[INFO] finished tweaking git repo https://github.com/les-amateurs/Oversync
[INFO] tweaked toml for git repo https://github.com/les-amateurs/Oversync written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/les-amateurs/Oversync on toolchain 9f32ccf35fb877270bc44a86a126440f04d676d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/les-amateurs/Oversync 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" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clokwerk v0.4.0
[INFO] [stderr]   Downloaded dotenvy v0.15.5
[INFO] [stderr]   Downloaded http-serde v1.1.2
[INFO] [stderr]   Downloaded openssl-sys v0.9.77
[INFO] [stderr]   Downloaded serenity v0.11.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c51d71a428c2b7876df0581f05c6312b627b3219a1c30fc2874bdb51d09e8ad9
[INFO] running `Command { std: "docker" "start" "-a" "c51d71a428c2b7876df0581f05c6312b627b3219a1c30fc2874bdb51d09e8ad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c51d71a428c2b7876df0581f05c6312b627b3219a1c30fc2874bdb51d09e8ad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c51d71a428c2b7876df0581f05c6312b627b3219a1c30fc2874bdb51d09e8ad9", kill_on_drop: false }`
[INFO] [stdout] c51d71a428c2b7876df0581f05c6312b627b3219a1c30fc2874bdb51d09e8ad9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ecdafc71df0d7359dbbb87a80370a54dd9ab5646c73f94a14a493250fbdf29f
[INFO] running `Command { std: "docker" "start" "-a" "9ecdafc71df0d7359dbbb87a80370a54dd9ab5646c73f94a14a493250fbdf29f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling openssl-sys v0.9.77
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]    Compiling serde_json v1.0.86
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking brotli v3.3.4
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]    Compiling async-trait v0.1.57
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking never v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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 serenity v0.11.5
[INFO] [stderr]     Checking typemap_rev v0.1.5
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking time v0.1.44
[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" "9ecdafc71df0d7359dbbb87a80370a54dd9ab5646c73f94a14a493250fbdf29f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ecdafc71df0d7359dbbb87a80370a54dd9ab5646c73f94a14a493250fbdf29f", kill_on_drop: false }`
[INFO] [stdout] 9ecdafc71df0d7359dbbb87a80370a54dd9ab5646c73f94a14a493250fbdf29f