[INFO] cloning repository https://github.com/liambloom/vec2d
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liambloom/vec2d" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliambloom%2Fvec2d", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliambloom%2Fvec2d'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5042ce4731bb9f0d76b3062cb42274ce65f1633
[INFO] testing liambloom/vec2d against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliambloom%2Fvec2d" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/liambloom/vec2d on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/liambloom/vec2d
[INFO] finished tweaking git repo https://github.com/liambloom/vec2d
[INFO] tweaked toml for git repo https://github.com/liambloom/vec2d written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/liambloom/vec2d already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8e4ee5b540b305ca4c31a64d66d6bab8108ccb1397f8d1f0188a0a6ad7a4d5a
[INFO] running `Command { std: "docker" "start" "-a" "d8e4ee5b540b305ca4c31a64d66d6bab8108ccb1397f8d1f0188a0a6ad7a4d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8e4ee5b540b305ca4c31a64d66d6bab8108ccb1397f8d1f0188a0a6ad7a4d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8e4ee5b540b305ca4c31a64d66d6bab8108ccb1397f8d1f0188a0a6ad7a4d5a", kill_on_drop: false }`
[INFO] [stdout] d8e4ee5b540b305ca4c31a64d66d6bab8108ccb1397f8d1f0188a0a6ad7a4d5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78818ad7dd9468078df17b2c5f94aaa8af4b794ef24bf9e0e0ad6a00e4a81ad7
[INFO] running `Command { std: "docker" "start" "-a" "78818ad7dd9468078df17b2c5f94aaa8af4b794ef24bf9e0e0ad6a00e4a81ad7", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec2d v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `borrow`
[INFO] [stdout]  --> src/lib.rs:1:100
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt, iter::{IntoIterator, Iterator}, marker::PhantomData, ops::{Index, IndexMut}, slice, borrow, cell::Cell};
[INFO] [stdout]   |                                                                                                    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `borrow` found for struct `Cell` in the current scope
[INFO] [stdout]    --> src/lib.rs:126:34
[INFO] [stdout]     |
[INFO] [stdout] 126 |         if self.i >= self.matrix.borrow().rows {
[INFO] [stdout]     |                                  ^^^^^^ method not found in `Cell<Matrix<T>>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::borrow::Borrow;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `borrow_mut` found for struct `Cell` in the current scope
[INFO] [stdout]    --> src/lib.rs:131:35
[INFO] [stdout]     |
[INFO] [stdout] 131 |             Some(&mut self.matrix.borrow_mut()[self.i - 1])
[INFO] [stdout]     |                                   ^^^^^^^^^^ method not found in `Cell<Matrix<T>>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::borrow::BorrowMut;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:142:21
[INFO] [stdout]     |
[INFO] [stdout] 142 |             matrix: self,
[INFO] [stdout]     |                     ^^^^ expected struct `Cell`, found `&mut Matrix<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note:         expected struct `Cell<Matrix<T>>`
[INFO] [stdout]             found mutable reference `&'a mut Matrix<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0063]: missing field `_marker` in initializer of `IterMut<'_, _>`
[INFO] [stdout]    --> src/lib.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         IterMut {
[INFO] [stdout]     |         ^^^^^^^ missing `_marker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0063, E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0063`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vec2d` due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "78818ad7dd9468078df17b2c5f94aaa8af4b794ef24bf9e0e0ad6a00e4a81ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78818ad7dd9468078df17b2c5f94aaa8af4b794ef24bf9e0e0ad6a00e4a81ad7", kill_on_drop: false }`
[INFO] [stdout] 78818ad7dd9468078df17b2c5f94aaa8af4b794ef24bf9e0e0ad6a00e4a81ad7