[INFO] cloning repository https://github.com/Manishearth/kuramoto-simulations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Manishearth/kuramoto-simulations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FManishearth%2Fkuramoto-simulations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FManishearth%2Fkuramoto-simulations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4072807923696bfa17d2099b6deeae7aae85e90
[INFO] testing Manishearth/kuramoto-simulations against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FManishearth%2Fkuramoto-simulations" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Manishearth/kuramoto-simulations on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Manishearth/kuramoto-simulations
[INFO] finished tweaking git repo https://github.com/Manishearth/kuramoto-simulations
[INFO] tweaked toml for git repo https://github.com/Manishearth/kuramoto-simulations written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Manishearth/kuramoto-simulations already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4371bcfcdd0f7a044e55470b445ead823ebd70652af390fb13c25873cec01024
[INFO] running `Command { std: "docker" "start" "-a" "4371bcfcdd0f7a044e55470b445ead823ebd70652af390fb13c25873cec01024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4371bcfcdd0f7a044e55470b445ead823ebd70652af390fb13c25873cec01024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4371bcfcdd0f7a044e55470b445ead823ebd70652af390fb13c25873cec01024", kill_on_drop: false }`
[INFO] [stdout] 4371bcfcdd0f7a044e55470b445ead823ebd70652af390fb13c25873cec01024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bddcc5de41becc985b100670f64ce441d922819071b909bf15ae24aabd452c07
[INFO] running `Command { std: "docker" "start" "-a" "bddcc5de41becc985b100670f64ce441d922819071b909bf15ae24aabd452c07", kill_on_drop: false }`
[INFO] [stderr]    Compiling kuramoto-simulations v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: invalid suffix `u` for number literal
[INFO] [stdout]   --> src/sim.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut i = 30u;
[INFO] [stdout]    |                 ^^^ invalid suffix `u`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `serialize`
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate serialize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `kuramoto-simulations` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "bddcc5de41becc985b100670f64ce441d922819071b909bf15ae24aabd452c07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bddcc5de41becc985b100670f64ce441d922819071b909bf15ae24aabd452c07", kill_on_drop: false }`
[INFO] [stdout] bddcc5de41becc985b100670f64ce441d922819071b909bf15ae24aabd452c07