[INFO] updating cached repository https://github.com/AuroransSolis/fractions_and_matrices
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c9dc186e532e4fe050bd19d9dfdadb6e3931d69
[INFO] checking AuroransSolis/fractions_and_matrices against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAuroransSolis%2Ffractions_and_matrices" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AuroransSolis/fractions_and_matrices on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AuroransSolis/fractions_and_matrices
[INFO] finished tweaking git repo https://github.com/AuroransSolis/fractions_and_matrices
[INFO] tweaked toml for git repo https://github.com/AuroransSolis/fractions_and_matrices written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/AuroransSolis/fractions_and_matrices 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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 926ed9f8310f45237525fe886689d2902e3c0da168cd4847be6ee3d9212fd369
[INFO] running `Command { std: "docker" "start" "-a" "926ed9f8310f45237525fe886689d2902e3c0da168cd4847be6ee3d9212fd369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "926ed9f8310f45237525fe886689d2902e3c0da168cd4847be6ee3d9212fd369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "926ed9f8310f45237525fe886689d2902e3c0da168cd4847be6ee3d9212fd369", kill_on_drop: false }`
[INFO] [stdout] 926ed9f8310f45237525fe886689d2902e3c0da168cd4847be6ee3d9212fd369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0776aec9aeb14289fa53b7ad13fe8d0c3d9936d4ef5cce1413a3aa4ddc1b69ae
[INFO] running `Command { std: "docker" "start" "-a" "0776aec9aeb14289fa53b7ad13fe8d0c3d9936d4ef5cce1413a3aa4ddc1b69ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking fractions_and_matrices v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fractions/macros.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     let (mut start, mut end) = num_string_tmp.split_at_mut(decimal_ind);
[INFO] [stdout]    |                          ----^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/fractions/base.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | into_frac_float!{f32 f64}
[INFO] [stdout]    | ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `into_frac_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fractions/macros.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     let (mut start, mut end) = num_string_tmp.split_at_mut(decimal_ind);
[INFO] [stdout]    |                                     ----^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/fractions/base.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | into_frac_float!{f32 f64}
[INFO] [stdout]    | ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `into_frac_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fractions/macros.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     let (mut start, mut end) = num_string_tmp.split_at_mut(decimal_ind);
[INFO] [stdout]    |                          ----^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/fractions/base.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | into_frac_float!{f32 f64}
[INFO] [stdout]    | ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `into_frac_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fractions/macros.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     let (mut start, mut end) = num_string_tmp.split_at_mut(decimal_ind);
[INFO] [stdout]    |                                     ----^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/fractions/base.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | into_frac_float!{f32 f64}
[INFO] [stdout]    | ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `into_frac_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stdout]     --> src/matrices/transforms.rs:141:42
[INFO] [stdout]      |
[INFO] [stdout] 141  |                     self[(target, b)] += self[(tool, b)].clone();
[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] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: try adding a local storing this...
[INFO] [stdout]     --> src/matrices/transforms.rs:141:42
[INFO] [stdout]      |
[INFO] [stdout] 141  |                     self[(target, b)] += self[(tool, b)].clone();
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout] help: ...and then using that local here
[INFO] [stdout]     --> src/matrices/transforms.rs:141:21
[INFO] [stdout]      |
[INFO] [stdout] 141  |                     self[(target, b)] += self[(tool, b)].clone();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      = note: this error originates in the macro `transforms_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stdout]     --> src/matrices/transforms.rs:149:42
[INFO] [stdout]      |
[INFO] [stdout] 149  |                     self[(target, b)] -= self[(tool, b)].clone();
[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] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: try adding a local storing this...
[INFO] [stdout]     --> src/matrices/transforms.rs:149:42
[INFO] [stdout]      |
[INFO] [stdout] 149  |                     self[(target, b)] -= self[(tool, b)].clone();
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout] help: ...and then using that local here
[INFO] [stdout]     --> src/matrices/transforms.rs:149:21
[INFO] [stdout]      |
[INFO] [stdout] 149  |                     self[(target, b)] -= self[(tool, b)].clone();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      = note: this error originates in the macro `transforms_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stdout]     --> src/matrices/transforms.rs:141:42
[INFO] [stdout]      |
[INFO] [stdout] 141  |                     self[(target, b)] += self[(tool, b)].clone();
[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] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: try adding a local storing this...
[INFO] [stdout]     --> src/matrices/transforms.rs:141:42
[INFO] [stdout]      |
[INFO] [stdout] 141  |                     self[(target, b)] += self[(tool, b)].clone();
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout] help: ...and then using that local here
[INFO] [stdout]     --> src/matrices/transforms.rs:141:21
[INFO] [stdout]      |
[INFO] [stdout] 141  |                     self[(target, b)] += self[(tool, b)].clone();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      = note: this error originates in the macro `transforms_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stdout]     --> src/matrices/transforms.rs:149:42
[INFO] [stdout]      |
[INFO] [stdout] 149  |                     self[(target, b)] -= self[(tool, b)].clone();
[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] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: try adding a local storing this...
[INFO] [stdout]     --> src/matrices/transforms.rs:149:42
[INFO] [stdout]      |
[INFO] [stdout] 149  |                     self[(target, b)] -= self[(tool, b)].clone();
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout] help: ...and then using that local here
[INFO] [stdout]     --> src/matrices/transforms.rs:149:21
[INFO] [stdout]      |
[INFO] [stdout] 149  |                     self[(target, b)] -= self[(tool, b)].clone();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1028 | transforms_impl!{Matrix<T>: Matrix, AugmentedMatrix<T>: AugmentedMatrix}
[INFO] [stdout]      | ------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]      = note: this error originates in the macro `transforms_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fractions_and_matrices` (lib) due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fractions_and_matrices` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0776aec9aeb14289fa53b7ad13fe8d0c3d9936d4ef5cce1413a3aa4ddc1b69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0776aec9aeb14289fa53b7ad13fe8d0c3d9936d4ef5cce1413a3aa4ddc1b69ae", kill_on_drop: false }`
[INFO] [stdout] 0776aec9aeb14289fa53b7ad13fe8d0c3d9936d4ef5cce1413a3aa4ddc1b69ae
