[INFO] fetching crate rsyntax 1.10.0...
[INFO] testing rsyntax-1.10.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate rsyntax 1.10.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate rsyntax 1.10.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rsyntax 1.10.0
[INFO] finished tweaking crates.io crate rsyntax 1.10.0
[INFO] tweaked toml for crates.io crate rsyntax 1.10.0 written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c368d81d400b5abdee1356bbe54fc0d72e22e334f27aaa9cb57fccd6a3690c22
[INFO] running `Command { std: "docker" "start" "-a" "c368d81d400b5abdee1356bbe54fc0d72e22e334f27aaa9cb57fccd6a3690c22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c368d81d400b5abdee1356bbe54fc0d72e22e334f27aaa9cb57fccd6a3690c22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c368d81d400b5abdee1356bbe54fc0d72e22e334f27aaa9cb57fccd6a3690c22", kill_on_drop: false }`
[INFO] [stdout] c368d81d400b5abdee1356bbe54fc0d72e22e334f27aaa9cb57fccd6a3690c22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b85f209cbe78435ae950987514c9764549c1f36a88deceb59a3ccdb184be4d64
[INFO] running `Command { std: "docker" "start" "-a" "b85f209cbe78435ae950987514c9764549c1f36a88deceb59a3ccdb184be4d64", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rsyntax v1.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `serialize`
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | extern crate serialize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsyntax` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b85f209cbe78435ae950987514c9764549c1f36a88deceb59a3ccdb184be4d64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85f209cbe78435ae950987514c9764549c1f36a88deceb59a3ccdb184be4d64", kill_on_drop: false }`
[INFO] [stdout] b85f209cbe78435ae950987514c9764549c1f36a88deceb59a3ccdb184be4d64