[INFO] cloning repository https://github.com/dharam-net/rocks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dharam-net/rocks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdharam-net%2Frocks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdharam-net%2Frocks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bda19390d7da76450aa515f450f6aadda2bc223
[INFO] checking dharam-net/rocks against try#595142ec72045c7f2fab2923de8e59995a52e6e7 for pr-151830
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdharam-net%2Frocks" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dharam-net/rocks
[INFO] finished tweaking git repo https://github.com/dharam-net/rocks
[INFO] tweaked toml for git repo https://github.com/dharam-net/rocks written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dharam-net/rocks on toolchain 595142ec72045c7f2fab2923de8e59995a52e6e7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dharam-net/rocks 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" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded glob v0.3.1
[INFO] [stderr]   Downloaded quote v1.0.26
[INFO] [stderr]   Downloaded jobserver v0.1.26
[INFO] [stderr]   Downloaded clang-sys v1.6.1
[INFO] [stderr]   Downloaded cc v1.0.79
[INFO] [stderr]   Downloaded rocksdb v0.20.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.56
[INFO] [stderr]   Downloaded unicode-ident v1.0.8
[INFO] [stderr]   Downloaded bindgen v0.64.0
[INFO] [stderr]   Downloaded regex v1.7.3
[INFO] [stderr]   Downloaded lz4-sys v1.9.4
[INFO] [stderr]   Downloaded bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]   Downloaded libc v0.2.141
[INFO] [stderr]   Downloaded zstd-sys v2.0.8+zstd.1.5.5
[INFO] [stderr]   Downloaded libz-sys v1.1.8
[INFO] [stderr]   Downloaded librocksdb-sys v0.10.0+7.9.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac0b91e07d86208039411a67bfd7ab1af35a7efb78d7aa26813b744d050eb749
[INFO] running `Command { std: "docker" "start" "-a" "ac0b91e07d86208039411a67bfd7ab1af35a7efb78d7aa26813b744d050eb749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac0b91e07d86208039411a67bfd7ab1af35a7efb78d7aa26813b744d050eb749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac0b91e07d86208039411a67bfd7ab1af35a7efb78d7aa26813b744d050eb749", kill_on_drop: false }`
[INFO] [stdout] ac0b91e07d86208039411a67bfd7ab1af35a7efb78d7aa26813b744d050eb749
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 149bd6843d92cecdd10ae11d7ce34d9f32b63be999da3959ed9812a27af9dadd
[INFO] running `Command { std: "docker" "start" "-a" "149bd6843d92cecdd10ae11d7ce34d9f32b63be999da3959ed9812a27af9dadd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling bindgen v0.64.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling clang-sys v1.6.1
[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] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[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" "149bd6843d92cecdd10ae11d7ce34d9f32b63be999da3959ed9812a27af9dadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "149bd6843d92cecdd10ae11d7ce34d9f32b63be999da3959ed9812a27af9dadd", kill_on_drop: false }`
[INFO] [stdout] 149bd6843d92cecdd10ae11d7ce34d9f32b63be999da3959ed9812a27af9dadd