[INFO] cloning repository https://github.com/prathik/redis_pi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prathik/redis_pi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprathik%2Fredis_pi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprathik%2Fredis_pi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11944e3145b735de1c7e4019000a22a4c8ed66e1
[INFO] checking prathik/redis_pi/11944e3145b735de1c7e4019000a22a4c8ed66e1 against master#7606c13961ddc1174b70638e934df0439b7dc515 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprathik%2Fredis_pi" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prathik/redis_pi on toolchain 7606c13961ddc1174b70638e934df0439b7dc515
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7606c13961ddc1174b70638e934df0439b7dc515" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/prathik/redis_pi
[INFO] finished tweaking git repo https://github.com/prathik/redis_pi
[INFO] tweaked toml for git repo https://github.com/prathik/redis_pi written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/prathik/redis_pi 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" "+7606c13961ddc1174b70638e934df0439b7dc515" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redis-module v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7606c13961ddc1174b70638e934df0439b7dc515" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c47ccf1fe0fce6c8926a33bc585d1b82c011dad5351bdf9fef1893398f70501a
[INFO] running `Command { std: "docker" "start" "-a" "c47ccf1fe0fce6c8926a33bc585d1b82c011dad5351bdf9fef1893398f70501a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c47ccf1fe0fce6c8926a33bc585d1b82c011dad5351bdf9fef1893398f70501a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c47ccf1fe0fce6c8926a33bc585d1b82c011dad5351bdf9fef1893398f70501a", kill_on_drop: false }`
[INFO] [stdout] c47ccf1fe0fce6c8926a33bc585d1b82c011dad5351bdf9fef1893398f70501a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7606c13961ddc1174b70638e934df0439b7dc515" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 796c8a5b0a8f9ead2679bb1555cc28c2f77acca54ddcc1957d1ceaafbdafa8a5
[INFO] running `Command { std: "docker" "start" "-a" "796c8a5b0a8f9ead2679bb1555cc28c2f77acca54ddcc1957d1ceaafbdafa8a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/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 vec_map v0.8.2
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling nom v7.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling rustversion v1.0.11
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v0.3.15
[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" "796c8a5b0a8f9ead2679bb1555cc28c2f77acca54ddcc1957d1ceaafbdafa8a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "796c8a5b0a8f9ead2679bb1555cc28c2f77acca54ddcc1957d1ceaafbdafa8a5", kill_on_drop: false }`
[INFO] [stdout] 796c8a5b0a8f9ead2679bb1555cc28c2f77acca54ddcc1957d1ceaafbdafa8a5