[INFO] cloning repository https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arnaud111/ServRust4AL2Grp2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c339ff6dc6aa0395b5f8b2e42b91d6178e351e34
[INFO] checking arnaud111/ServRust4AL2Grp2 against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] finished tweaking git repo https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] tweaked toml for git repo https://github.com/arnaud111/ServRust4AL2Grp2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arnaud111/ServRust4AL2Grp2 on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arnaud111/ServRust4AL2Grp2 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking arnaud111/ServRust4AL2Grp2 against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnaud111%2FServRust4AL2Grp2" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] finished tweaking git repo https://github.com/arnaud111/ServRust4AL2Grp2
[INFO] tweaked toml for git repo https://github.com/arnaud111/ServRust4AL2Grp2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arnaud111/ServRust4AL2Grp2 on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arnaud111/ServRust4AL2Grp2 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8856a514ccd91e65d5d7c914af3432dcd57f21297fa5fc09743d449c080bd59
[INFO] running `Command { std: "docker" "start" "-a" "b8856a514ccd91e65d5d7c914af3432dcd57f21297fa5fc09743d449c080bd59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8856a514ccd91e65d5d7c914af3432dcd57f21297fa5fc09743d449c080bd59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8856a514ccd91e65d5d7c914af3432dcd57f21297fa5fc09743d449c080bd59", kill_on_drop: false }`
[INFO] [stdout] b8856a514ccd91e65d5d7c914af3432dcd57f21297fa5fc09743d449c080bd59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7838a9f216ec3c4a0ebbcacd1f05b0fdccfc739857e4bad5ab31998fbeb11f79
[INFO] running `Command { std: "docker" "start" "-a" "7838a9f216ec3c4a0ebbcacd1f05b0fdccfc739857e4bad5ab31998fbeb11f79", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking md-5 v0.10.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] 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" "7838a9f216ec3c4a0ebbcacd1f05b0fdccfc739857e4bad5ab31998fbeb11f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7838a9f216ec3c4a0ebbcacd1f05b0fdccfc739857e4bad5ab31998fbeb11f79", kill_on_drop: false }`
[INFO] [stdout] 7838a9f216ec3c4a0ebbcacd1f05b0fdccfc739857e4bad5ab31998fbeb11f79