[INFO] fetching crate quantmath 0.1.0...
[INFO] testing quantmath-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate quantmath 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate quantmath 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quantmath 0.1.0
[INFO] finished tweaking crates.io crate quantmath 0.1.0
[INFO] tweaked toml for crates.io crate quantmath 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d4e1797a2a7ca5419274d425db025e883051b833c1ed0a77e7b3dd20bbf2c4b
[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" "6d4e1797a2a7ca5419274d425db025e883051b833c1ed0a77e7b3dd20bbf2c4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d4e1797a2a7ca5419274d425db025e883051b833c1ed0a77e7b3dd20bbf2c4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d4e1797a2a7ca5419274d425db025e883051b833c1ed0a77e7b3dd20bbf2c4b", kill_on_drop: false }`
[INFO] [stdout] 6d4e1797a2a7ca5419274d425db025e883051b833c1ed0a77e7b3dd20bbf2c4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 564a1650bb777aadcd39eaefcd4c2b9f00aaf6df87bcf00718d2f10fd43f8c10
[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" "564a1650bb777aadcd39eaefcd4c2b9f00aaf6df87bcf00718d2f10fd43f8c10", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling erased-serde v0.3.13
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling approx v0.2.1
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling statrs v0.9.0
[INFO] [stderr]    Compiling alga v0.6.0
[INFO] [stderr]    Compiling serde_tagged v0.2.0
[INFO] [stderr]    Compiling nalgebra v0.15.3
[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-0.15.3/src/base/cg.rs:292:44
[INFO] [stdout]     |
[INFO] [stdout] 292 |                 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "564a1650bb777aadcd39eaefcd4c2b9f00aaf6df87bcf00718d2f10fd43f8c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564a1650bb777aadcd39eaefcd4c2b9f00aaf6df87bcf00718d2f10fd43f8c10", kill_on_drop: false }`
[INFO] [stdout] 564a1650bb777aadcd39eaefcd4c2b9f00aaf6df87bcf00718d2f10fd43f8c10