[INFO] cloning repository https://github.com/BenMagill/sharded_fs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BenMagill/sharded_fs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenMagill%2Fsharded_fs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenMagill%2Fsharded_fs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d05bc496682dd17d517b1755eaa8a65097db10c7
[INFO] checking BenMagill/sharded_fs against master#ab1d2444533d829e2d5cff6634cd3c70de6d7103 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenMagill%2Fsharded_fs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BenMagill/sharded_fs
[INFO] finished tweaking git repo https://github.com/BenMagill/sharded_fs
[INFO] tweaked toml for git repo https://github.com/BenMagill/sharded_fs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BenMagill/sharded_fs on toolchain ab1d2444533d829e2d5cff6634cd3c70de6d7103
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BenMagill/sharded_fs 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" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.26
[INFO] [stderr]   Downloaded tokio-macros v2.0.0
[INFO] [stderr]   Downloaded serde_derive v1.0.160
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[INFO] [stderr]   Downloaded tempfile v3.5.0
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[INFO] [stderr]   Downloaded serde v1.0.160
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[INFO] [stderr]   Downloaded cargo-docs v0.1.24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ce29c67d67f9142d6fad8b06a71820db389dfcfc67067478bd82444c0b87cbb
[INFO] running `Command { std: "docker" "start" "-a" "8ce29c67d67f9142d6fad8b06a71820db389dfcfc67067478bd82444c0b87cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ce29c67d67f9142d6fad8b06a71820db389dfcfc67067478bd82444c0b87cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce29c67d67f9142d6fad8b06a71820db389dfcfc67067478bd82444c0b87cbb", kill_on_drop: false }`
[INFO] [stdout] 8ce29c67d67f9142d6fad8b06a71820db389dfcfc67067478bd82444c0b87cbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55f5e83e7e0524752d48c5c16184fd62cabf1577cd57ab8e5cd5ccdd84bc64bb
[INFO] running `Command { std: "docker" "start" "-a" "55f5e83e7e0524752d48c5c16184fd62cabf1577cd57ab8e5cd5ccdd84bc64bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking log v0.4.17
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling syn v1.0.109
[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]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[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" "55f5e83e7e0524752d48c5c16184fd62cabf1577cd57ab8e5cd5ccdd84bc64bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f5e83e7e0524752d48c5c16184fd62cabf1577cd57ab8e5cd5ccdd84bc64bb", kill_on_drop: false }`
[INFO] [stdout] 55f5e83e7e0524752d48c5c16184fd62cabf1577cd57ab8e5cd5ccdd84bc64bb
