[INFO] cloning repository https://github.com/S-guchi/RustCoder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/S-guchi/RustCoder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-guchi%2FRustCoder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-guchi%2FRustCoder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d4105a3c0f5cd865dbab940b7c7fb38dd58b039
[INFO] checking S-guchi/RustCoder against master#5431404b87967c69438ea1e698edbe96505f0798 for pr-119849
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-guchi%2FRustCoder" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/S-guchi/RustCoder on toolchain 5431404b87967c69438ea1e698edbe96505f0798
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/S-guchi/RustCoder
[INFO] finished tweaking git repo https://github.com/S-guchi/RustCoder
[INFO] tweaked toml for git repo https://github.com/S-guchi/RustCoder written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/S-guchi/RustCoder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitset-fixed v0.1.0
[INFO] [stderr]   Downloaded whiteread v0.5.0
[INFO] [stderr]   Downloaded proconio v0.3.6
[INFO] [stderr]   Downloaded superslice v1.0.0
[INFO] [stderr]   Downloaded sized-chunks v0.5.3
[INFO] [stderr]   Downloaded ndarray v0.13.0
[INFO] [stderr]   Downloaded nalgebra v0.20.0
[INFO] [stderr]   Downloaded petgraph v0.5.0
[INFO] [stderr]   Downloaded im-rc v14.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f75543fe05cc9a4a6ac6ee3dfcf2054e5b5a3cae8640cc259d8ba292698a6f71
[INFO] running `Command { std: "docker" "start" "-a" "f75543fe05cc9a4a6ac6ee3dfcf2054e5b5a3cae8640cc259d8ba292698a6f71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f75543fe05cc9a4a6ac6ee3dfcf2054e5b5a3cae8640cc259d8ba292698a6f71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f75543fe05cc9a4a6ac6ee3dfcf2054e5b5a3cae8640cc259d8ba292698a6f71", kill_on_drop: false }`
[INFO] [stdout] f75543fe05cc9a4a6ac6ee3dfcf2054e5b5a3cae8640cc259d8ba292698a6f71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 717a59860d0f8161272d4820db6cef46ab3215b794eec666583cdac806d6f78b
[INFO] running `Command { std: "docker" "start" "-a" "717a59860d0f8161272d4820db6cef46ab3215b794eec666583cdac806d6f78b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking rand_hc v0.2.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking nalgebra v0.20.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking whiteread v0.5.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking bitset-fixed v0.1.0
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking RustCoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `RustCoder` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_coder`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustCoder` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_coder`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling proconio-derive v0.1.9
[INFO] [stderr]     Checking proconio v0.3.6
[INFO] [stderr]     Checking math-and-algorithm v0.1.0 (/opt/rustwide/workdir/math-and-algorithm)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.95s
[INFO] running `Command { std: "docker" "inspect" "717a59860d0f8161272d4820db6cef46ab3215b794eec666583cdac806d6f78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "717a59860d0f8161272d4820db6cef46ab3215b794eec666583cdac806d6f78b", kill_on_drop: false }`
[INFO] [stdout] 717a59860d0f8161272d4820db6cef46ab3215b794eec666583cdac806d6f78b
[INFO] checking S-guchi/RustCoder against try#21bc403d557a2516df70ea80fb19b94177beede5 for pr-119849
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-guchi%2FRustCoder" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/S-guchi/RustCoder on toolchain 21bc403d557a2516df70ea80fb19b94177beede5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/S-guchi/RustCoder
[INFO] finished tweaking git repo https://github.com/S-guchi/RustCoder
[INFO] tweaked toml for git repo https://github.com/S-guchi/RustCoder written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/S-guchi/RustCoder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 394470a6d8d80fc79e9f44c773690d59b0ec5522f5e9d7c5158755f3a2b14d0a
[INFO] running `Command { std: "docker" "start" "-a" "394470a6d8d80fc79e9f44c773690d59b0ec5522f5e9d7c5158755f3a2b14d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "394470a6d8d80fc79e9f44c773690d59b0ec5522f5e9d7c5158755f3a2b14d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394470a6d8d80fc79e9f44c773690d59b0ec5522f5e9d7c5158755f3a2b14d0a", kill_on_drop: false }`
[INFO] [stdout] 394470a6d8d80fc79e9f44c773690d59b0ec5522f5e9d7c5158755f3a2b14d0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22f9c4d29e4bf5d9b60a712bfd8f5be4df1252e36a230167fc90f071ecbe8ae8
[INFO] running `Command { std: "docker" "start" "-a" "22f9c4d29e4bf5d9b60a712bfd8f5be4df1252e36a230167fc90f071ecbe8ae8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]     Checking rand_hc v0.2.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking nalgebra v0.20.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking bitset-fixed v0.1.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking whiteread v0.5.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking RustCoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `RustCoder` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_coder`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustCoder` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_coder`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling proconio-derive v0.1.9
[INFO] [stderr]     Checking proconio v0.3.6
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/nalgebra-0.20.0/src/lib.rs:598:65
[INFO] [stdout]     |
[INFO] [stdout] 598 |     P::from_coordinates((p1.coordinates() + p2.coordinates()) * convert(0.5))
[INFO] [stdout]     |                                                               - ^^^^^^^ cannot infer type of the type parameter `To` declared on the function `convert`
[INFO] [stdout]     |                                                               |
[INFO] [stdout]     |                                                               type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `<<P as EuclideanSpace>::Coordinates as Mul<_>>::Output == <P as EuclideanSpace>::Coordinates`
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 598 |     P::from_coordinates((p1.coordinates() + p2.coordinates()) * convert::<f64, To>(0.5))
[INFO] [stdout]     |                                                                        +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nalgebra` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "22f9c4d29e4bf5d9b60a712bfd8f5be4df1252e36a230167fc90f071ecbe8ae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22f9c4d29e4bf5d9b60a712bfd8f5be4df1252e36a230167fc90f071ecbe8ae8", kill_on_drop: false }`
[INFO] [stdout] 22f9c4d29e4bf5d9b60a712bfd8f5be4df1252e36a230167fc90f071ecbe8ae8