[INFO] cloning repository https://github.com/PatrickAulbach/arnolid_method
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PatrickAulbach/arnolid_method" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPatrickAulbach%2Farnolid_method", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPatrickAulbach%2Farnolid_method'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d46db86f71a610f35aeeda8707fd1aa3f0d3f26
[INFO] checking PatrickAulbach/arnolid_method against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPatrickAulbach%2Farnolid_method" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PatrickAulbach/arnolid_method on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PatrickAulbach/arnolid_method
[INFO] finished tweaking git repo https://github.com/PatrickAulbach/arnolid_method
[INFO] tweaked toml for git repo https://github.com/PatrickAulbach/arnolid_method written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/PatrickAulbach/arnolid_method already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b54622eca2fd733c145715c3e0705e9fc88390e1c0c169ffa2a6c020247224db
[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" "b54622eca2fd733c145715c3e0705e9fc88390e1c0c169ffa2a6c020247224db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b54622eca2fd733c145715c3e0705e9fc88390e1c0c169ffa2a6c020247224db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54622eca2fd733c145715c3e0705e9fc88390e1c0c169ffa2a6c020247224db", kill_on_drop: false }`
[INFO] [stdout] b54622eca2fd733c145715c3e0705e9fc88390e1c0c169ffa2a6c020247224db
[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=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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9371f3f5aab1b83765141ed7b752a4d462b2a9f4deb9c5901168d9e955eb6edc
[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" "9371f3f5aab1b83765141ed7b752a4d462b2a9f4deb9c5901168d9e955eb6edc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking arnolid_method v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Neg`
[INFO] [stdout]  --> src/operations/matrix_operations.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Mul, Add, AddAssign, Neg};
[INFO] [stdout]   |                                     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Dimensions`
[INFO] [stdout]  --> src/operations/matrix_operations.rs:7:57
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::common::matrix::dimensions::{DimensionError, Dimensions};
[INFO] [stdout]   |                                                         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Num`
[INFO] [stdout]  --> src/krylov_subspace_methods/arnoldi_method.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num::Num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Neg`
[INFO] [stdout]  --> src/operations/matrix_operations.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Mul, Add, AddAssign, Neg};
[INFO] [stdout]   |                                     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Dimensions`
[INFO] [stdout]  --> src/operations/matrix_operations.rs:7:57
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::common::matrix::dimensions::{DimensionError, Dimensions};
[INFO] [stdout]   |                                                         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Num`
[INFO] [stdout]  --> src/krylov_subspace_methods/arnoldi_method.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num::Num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: a value of type `T` cannot be built from an iterator over elements of type `_`
[INFO] [stdout]   --> src/common/reader/file_reader.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 .collect())
[INFO] [stdout]    |                  ^^^^^^^ value of type `T` cannot be built from `std::iter::Iterator<Item=_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arnolid_method`
[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] [stdout] error[E0277]: a value of type `T` cannot be built from an iterator over elements of type `_`
[INFO] [stdout]   --> src/common/reader/file_reader.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 .collect())
[INFO] [stdout]    |                  ^^^^^^^ value of type `T` cannot be built from `std::iter::Iterator<Item=_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9371f3f5aab1b83765141ed7b752a4d462b2a9f4deb9c5901168d9e955eb6edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9371f3f5aab1b83765141ed7b752a4d462b2a9f4deb9c5901168d9e955eb6edc", kill_on_drop: false }`
[INFO] [stdout] 9371f3f5aab1b83765141ed7b752a4d462b2a9f4deb9c5901168d9e955eb6edc