[INFO] fetching crate simple-grid 2.2.1...
[INFO] checking simple-grid-2.2.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate simple-grid 2.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate simple-grid 2.2.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-grid 2.2.1
[INFO] finished tweaking crates.io crate simple-grid 2.2.1
[INFO] tweaked toml for crates.io crate simple-grid 2.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate simple-grid 2.2.1 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75d18c810f194ef970d6d2baa9cf064ee68e927153a935edd47c9d5cae300e09
[INFO] running `Command { std: "docker" "start" "-a" "75d18c810f194ef970d6d2baa9cf064ee68e927153a935edd47c9d5cae300e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75d18c810f194ef970d6d2baa9cf064ee68e927153a935edd47c9d5cae300e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d18c810f194ef970d6d2baa9cf064ee68e927153a935edd47c9d5cae300e09", kill_on_drop: false }`
[INFO] [stdout] 75d18c810f194ef970d6d2baa9cf064ee68e927153a935edd47c9d5cae300e09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65ab95c827f6da34d3950052e6e9e6648291edb4ed8ef6666e1a860cad9e2155
[INFO] running `Command { std: "docker" "start" "-a" "65ab95c827f6da34d3950052e6e9e6648291edb4ed8ef6666e1a860cad9e2155", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking simple-grid v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `panic_if_empty` is never used
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_empty` is never used
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `Command { std: "docker" "inspect" "65ab95c827f6da34d3950052e6e9e6648291edb4ed8ef6666e1a860cad9e2155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ab95c827f6da34d3950052e6e9e6648291edb4ed8ef6666e1a860cad9e2155", kill_on_drop: false }`
[INFO] [stdout] 65ab95c827f6da34d3950052e6e9e6648291edb4ed8ef6666e1a860cad9e2155
[INFO] checking simple-grid-2.2.1 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate simple-grid 2.2.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate simple-grid 2.2.1 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-grid 2.2.1
[INFO] finished tweaking crates.io crate simple-grid 2.2.1
[INFO] tweaked toml for crates.io crate simple-grid 2.2.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate simple-grid 2.2.1 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c865b912eb8d7ce3cddc4da926dea2cff65e9f2ed9ceee30e189ae9e25f66ee
[INFO] running `Command { std: "docker" "start" "-a" "7c865b912eb8d7ce3cddc4da926dea2cff65e9f2ed9ceee30e189ae9e25f66ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c865b912eb8d7ce3cddc4da926dea2cff65e9f2ed9ceee30e189ae9e25f66ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c865b912eb8d7ce3cddc4da926dea2cff65e9f2ed9ceee30e189ae9e25f66ee", kill_on_drop: false }`
[INFO] [stdout] 7c865b912eb8d7ce3cddc4da926dea2cff65e9f2ed9ceee30e189ae9e25f66ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97aa6094d22320f2f134e3cceec748ddcd7a6cc12d2d6ff68cee6cab30e54d05
[INFO] running `Command { std: "docker" "start" "-a" "97aa6094d22320f2f134e3cceec748ddcd7a6cc12d2d6ff68cee6cab30e54d05", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking simple-grid v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `panic_if_empty` is never used
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_empty` is never used
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `Command { std: "docker" "inspect" "97aa6094d22320f2f134e3cceec748ddcd7a6cc12d2d6ff68cee6cab30e54d05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97aa6094d22320f2f134e3cceec748ddcd7a6cc12d2d6ff68cee6cab30e54d05", kill_on_drop: false }`
[INFO] [stdout] 97aa6094d22320f2f134e3cceec748ddcd7a6cc12d2d6ff68cee6cab30e54d05