[INFO] fetching crate ingrid 0.1.0...
[INFO] checking ingrid-0.1.0 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate ingrid 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate ingrid 0.1.0 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ingrid 0.1.0
[INFO] finished tweaking crates.io crate ingrid 0.1.0
[INFO] tweaked toml for crates.io crate ingrid 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e3e5286f701bbecb70d81c213215985ca4c02cccf686af159e25b5cc9c4da2c
[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" "1e3e5286f701bbecb70d81c213215985ca4c02cccf686af159e25b5cc9c4da2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e3e5286f701bbecb70d81c213215985ca4c02cccf686af159e25b5cc9c4da2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e3e5286f701bbecb70d81c213215985ca4c02cccf686af159e25b5cc9c4da2c", kill_on_drop: false }`
[INFO] [stdout] 1e3e5286f701bbecb70d81c213215985ca4c02cccf686af159e25b5cc9c4da2c
[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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e45573c1bc54dcc813171533e6f83f191b61709d9ca43d343ffbfbc8f471ce4b
[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" "e45573c1bc54dcc813171533e6f83f191b61709d9ca43d343ffbfbc8f471ce4b", kill_on_drop: false }`
[INFO] [stderr]     Checking ingrid v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `grid`
[INFO] [stdout]   --> src/cell.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     grid: &'a Grid<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `coordinate`
[INFO] [stdout]   --> src/cell.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     coordinate: Coordinate
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/row_mut.rs:757:13
[INFO] [stdout]     |
[INFO] [stdout] 757 |         let mut row = grid.row_mut(0);
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/row_mut.rs:761:13
[INFO] [stdout]     |
[INFO] [stdout] 761 |         let mut row = grid.row_mut(1);
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/column_mut.rs:800:13
[INFO] [stdout]     |
[INFO] [stdout] 800 |         let mut column = grid.column_mut(0);
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/column_mut.rs:804:13
[INFO] [stdout]     |
[INFO] [stdout] 804 |         let mut column = grid.column_mut(1);
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `grid`
[INFO] [stdout]   --> src/cell.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     grid: &'a Grid<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `coordinate`
[INFO] [stdout]   --> src/cell.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     coordinate: Coordinate
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/grid.rs:1316:62
[INFO] [stdout]      |
[INFO] [stdout] 1316 |         assert!(grid.iterator().all(|item| { *item == 42 }), true);
[INFO] [stdout]      |                                                              ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1316 |         assert!(grid.iterator().all(|item| { *item == 42 }), "{}", true);
[INFO] [stdout]      |                                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "e45573c1bc54dcc813171533e6f83f191b61709d9ca43d343ffbfbc8f471ce4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e45573c1bc54dcc813171533e6f83f191b61709d9ca43d343ffbfbc8f471ce4b", kill_on_drop: false }`
[INFO] [stdout] e45573c1bc54dcc813171533e6f83f191b61709d9ca43d343ffbfbc8f471ce4b