[INFO] updating cached repository https://github.com/jdmichaud/wgrep2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ae922fd86e3cff33d59d17ea5ff82553b70a45b
[INFO] testing jdmichaud/wgrep2 against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdmichaud%2Fwgrep2" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jdmichaud/wgrep2 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jdmichaud/wgrep2
[INFO] finished tweaking git repo https://github.com/jdmichaud/wgrep2
[INFO] tweaked toml for git repo https://github.com/jdmichaud/wgrep2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jdmichaud/wgrep2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c17197584029f651d75350daf6f7471c5a480eb0dae43719d217d2a4542ccffc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c17197584029f651d75350daf6f7471c5a480eb0dae43719d217d2a4542ccffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c17197584029f651d75350daf6f7471c5a480eb0dae43719d217d2a4542ccffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c17197584029f651d75350daf6f7471c5a480eb0dae43719d217d2a4542ccffc", kill_on_drop: false }`
[INFO] [stdout] c17197584029f651d75350daf6f7471c5a480eb0dae43719d217d2a4542ccffc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1cdd0f036ec523f259e45ddba48c06cbc92aaac47371019885d301593213e3ed
[INFO] running `Command { std: "docker" "start" "-a" "1cdd0f036ec523f259e45ddba48c06cbc92aaac47371019885d301593213e3ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v0.9.11
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_derive v0.9.12
[INFO] [stderr]    Compiling serde_json v0.9.9
[INFO] [stderr]    Compiling wgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: comparison operators cannot be chained
[INFO] [stdout]   --> src/wglib/server.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let res = serde_json::from_str<Request>(buffer);
[INFO] [stdout]    |                                   ^       ^
[INFO] [stdout]    |
[INFO] [stdout] help: use `::<...>` instead of `<...>` to specify type arguments
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let res = serde_json::from_str::<Request>(buffer);
[INFO] [stdout]    |                                   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: comparison operators cannot be chained
[INFO] [stdout]   --> src/wglib/server.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |       res = serde_json::from_str<Request>(buffer);
[INFO] [stdout]    |                                 ^       ^
[INFO] [stdout]    |
[INFO] [stdout] help: use `::<...>` instead of `<...>` to specify type arguments
[INFO] [stdout]    |
[INFO] [stdout] 26 |       res = serde_json::from_str::<Request>(buffer);
[INFO] [stdout]    |                                 ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `serde`
[INFO] [stdout]  --> src/wglib/error.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]   |                     ^^^^^^^^^^^ can't find crate
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wgrep`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1cdd0f036ec523f259e45ddba48c06cbc92aaac47371019885d301593213e3ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cdd0f036ec523f259e45ddba48c06cbc92aaac47371019885d301593213e3ed", kill_on_drop: false }`
[INFO] [stdout] 1cdd0f036ec523f259e45ddba48c06cbc92aaac47371019885d301593213e3ed