[INFO] cloning repository https://github.com/tirr-c/tiny-raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tirr-c/tiny-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftirr-c%2Ftiny-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftirr-c%2Ftiny-raytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a307bc002b273278474e813cd11eb446df44673
[INFO] checking tirr-c/tiny-raytracer against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftirr-c%2Ftiny-raytracer" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tirr-c/tiny-raytracer on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tirr-c/tiny-raytracer
[INFO] finished tweaking git repo https://github.com/tirr-c/tiny-raytracer
[INFO] tweaked toml for git repo https://github.com/tirr-c/tiny-raytracer written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/tirr-c/tiny-raytracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d102364064a15614d9dc7b1bb917a1a39e5c2aa0535502869b9167bf616ef847
[INFO] running `Command { std: "docker" "start" "-a" "d102364064a15614d9dc7b1bb917a1a39e5c2aa0535502869b9167bf616ef847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d102364064a15614d9dc7b1bb917a1a39e5c2aa0535502869b9167bf616ef847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d102364064a15614d9dc7b1bb917a1a39e5c2aa0535502869b9167bf616ef847", kill_on_drop: false }`
[INFO] [stdout] d102364064a15614d9dc7b1bb917a1a39e5c2aa0535502869b9167bf616ef847
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1b4f598af3cc9d838757e703405f0a1faadd3d9839b4c80a8ab49ff250628de
[INFO] running `Command { std: "docker" "start" "-a" "b1b4f598af3cc9d838757e703405f0a1faadd3d9839b4c80a8ab49ff250628de", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking libm v0.1.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking matrixmultiply v0.2.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking png v0.14.0
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking alga v0.8.1
[INFO] [stderr]     Checking nalgebra v0.17.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stdout] error[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.0/src/base/cg.rs:297:44
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 self[(j, i)] += shift[j] * self[(D::dim() - 1, 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: aborting due to previous error
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b1b4f598af3cc9d838757e703405f0a1faadd3d9839b4c80a8ab49ff250628de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1b4f598af3cc9d838757e703405f0a1faadd3d9839b4c80a8ab49ff250628de", kill_on_drop: false }`
[INFO] [stdout] b1b4f598af3cc9d838757e703405f0a1faadd3d9839b4c80a8ab49ff250628de