[INFO] cloning repository https://github.com/bausano/pong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bausano/pong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbausano%2Fpong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbausano%2Fpong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca7b62ddbfe310cd84125af3325a8de2c86fa9d5
[INFO] documenting bausano/pong against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbausano%2Fpong" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bausano/pong on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bausano/pong
[INFO] finished tweaking git repo https://github.com/bausano/pong
[INFO] tweaked toml for git repo https://github.com/bausano/pong written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/bausano/pong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3e625e224fe4313b6ee59cc864ea01be7b9a65033606a98ac324486ae872dce
[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" "b3e625e224fe4313b6ee59cc864ea01be7b9a65033606a98ac324486ae872dce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3e625e224fe4313b6ee59cc864ea01be7b9a65033606a98ac324486ae872dce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3e625e224fe4313b6ee59cc864ea01be7b9a65033606a98ac324486ae872dce", kill_on_drop: false }`
[INFO] [stdout] b3e625e224fe4313b6ee59cc864ea01be7b9a65033606a98ac324486ae872dce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da3200e26bee6444fba99997ded457cd51aba9511be8761ef2a6d59bdca8afe4
[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" "da3200e26bee6444fba99997ded457cd51aba9511be8761ef2a6d59bdca8afe4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rscam v0.5.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]     Checking gfx_core v0.9.2
[INFO] [stderr]     Checking gilrs-core v0.2.5
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking alga v0.8.2
[INFO] [stderr]     Checking glyph_brush v0.6.3
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]    Compiling backtrace v0.3.45
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking gilrs v0.7.4
[INFO] [stderr]     Checking glyph_brush v0.5.4
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling gfx_gl v0.6.1
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking nalgebra v0.17.3
[INFO] [stderr]     Checking glutin v0.20.1
[INFO] [stderr]     Checking gfx v0.18.2
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking gfx_device_gl v0.16.2
[INFO] [stderr]     Checking gfx_window_glutin v0.30.0
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stdout] error[E0502]: cannot borrow `b` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.3/src/sparse/cs_matrix_solve.rs:81:29
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     b[i] -= b[j] * val;
[INFO] [stdout]    |                     --------^---------
[INFO] [stdout]    |                     |       |
[INFO] [stdout]    |                     |       immutable borrow occurs here
[INFO] [stdout]    |                     mutable borrow occurs here
[INFO] [stdout]    |                     mutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `b` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.3/src/sparse/cs_matrix_solve.rs:122:39
[INFO] [stdout]     |
[INFO] [stdout] 122 |                         b[j] -= val * b[i];
[INFO] [stdout]     |                         --------------^---
[INFO] [stdout]     |                         |             |
[INFO] [stdout]     |                         |             immutable borrow occurs here
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |                         mutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `workspace` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.3/src/sparse/cs_matrix_solve.rs:181:33
[INFO] [stdout]     |
[INFO] [stdout] 181 |                 workspace[i] -= workspace[j] * val;
[INFO] [stdout]     |                 ----------------^^^^^^^^^---------
[INFO] [stdout]     |                 |               |
[INFO] [stdout]     |                 |               immutable borrow occurs here
[INFO] [stdout]     |                 mutable borrow occurs here
[INFO] [stdout]     |                 mutable borrow later used here
[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 E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nalgebra`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "da3200e26bee6444fba99997ded457cd51aba9511be8761ef2a6d59bdca8afe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da3200e26bee6444fba99997ded457cd51aba9511be8761ef2a6d59bdca8afe4", kill_on_drop: false }`
[INFO] [stdout] da3200e26bee6444fba99997ded457cd51aba9511be8761ef2a6d59bdca8afe4