[INFO] cloning repository https://github.com/milojacquet/flat-hypercube
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/milojacquet/flat-hypercube" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilojacquet%2Fflat-hypercube", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilojacquet%2Fflat-hypercube'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bafb23518c38fd6af669401428c0dff9ea0c8df
[INFO] checking milojacquet/flat-hypercube against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilojacquet%2Fflat-hypercube" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/milojacquet/flat-hypercube on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/milojacquet/flat-hypercube
[INFO] finished tweaking git repo https://github.com/milojacquet/flat-hypercube
[INFO] tweaked toml for git repo https://github.com/milojacquet/flat-hypercube written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/milojacquet/flat-hypercube 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81ffb8a2610a650de3457c0db48087753a134bf783a925904d33ea7afcb990b4
[INFO] running `Command { std: "docker" "start" "-a" "81ffb8a2610a650de3457c0db48087753a134bf783a925904d33ea7afcb990b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81ffb8a2610a650de3457c0db48087753a134bf783a925904d33ea7afcb990b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ffb8a2610a650de3457c0db48087753a134bf783a925904d33ea7afcb990b4", kill_on_drop: false }`
[INFO] [stdout] 81ffb8a2610a650de3457c0db48087753a134bf783a925904d33ea7afcb990b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa49132e8e4ac303081649e6dee9d9ae49a9b815149f4b92d6d35db56b5d76f6
[INFO] running `Command { std: "docker" "start" "-a" "aa49132e8e4ac303081649e6dee9d9ae49a9b815149f4b92d6d35db56b5d76f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking flat-hypercube v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `concat_grid` is never used
[INFO] [stdout]    --> src/layout.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl Layout {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn concat_grid(mut layouts: Vec<Vec<Self>>, gap_horiz: i16, gap_vert: i16) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `concat_grid` is never used
[INFO] [stdout]    --> src/layout.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl Layout {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn concat_grid(mut layouts: Vec<Vec<Self>>, gap_horiz: i16, gap_vert: i16) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "aa49132e8e4ac303081649e6dee9d9ae49a9b815149f4b92d6d35db56b5d76f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa49132e8e4ac303081649e6dee9d9ae49a9b815149f4b92d6d35db56b5d76f6", kill_on_drop: false }`
[INFO] [stdout] aa49132e8e4ac303081649e6dee9d9ae49a9b815149f4b92d6d35db56b5d76f6
[INFO] checking milojacquet/flat-hypercube against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilojacquet%2Fflat-hypercube" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/milojacquet/flat-hypercube on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/milojacquet/flat-hypercube
[INFO] finished tweaking git repo https://github.com/milojacquet/flat-hypercube
[INFO] tweaked toml for git repo https://github.com/milojacquet/flat-hypercube written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/milojacquet/flat-hypercube 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba3ba4fac9d40198cf18102872fb9c4ea813cf3d7db723ccb174e0b463b3d25a
[INFO] running `Command { std: "docker" "start" "-a" "ba3ba4fac9d40198cf18102872fb9c4ea813cf3d7db723ccb174e0b463b3d25a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba3ba4fac9d40198cf18102872fb9c4ea813cf3d7db723ccb174e0b463b3d25a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba3ba4fac9d40198cf18102872fb9c4ea813cf3d7db723ccb174e0b463b3d25a", kill_on_drop: false }`
[INFO] [stdout] ba3ba4fac9d40198cf18102872fb9c4ea813cf3d7db723ccb174e0b463b3d25a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2f4f15b0ee014955957e2cd281c44502879ecb05eaf3034d397771ada9a3249
[INFO] running `Command { std: "docker" "start" "-a" "c2f4f15b0ee014955957e2cd281c44502879ecb05eaf3034d397771ada9a3249", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking flat-hypercube v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `concat_grid` is never used
[INFO] [stdout]    --> src/layout.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl Layout {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn concat_grid(mut layouts: Vec<Vec<Self>>, gap_horiz: i16, gap_vert: i16) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `concat_grid` is never used
[INFO] [stdout]    --> src/layout.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl Layout {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn concat_grid(mut layouts: Vec<Vec<Self>>, gap_horiz: i16, gap_vert: i16) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.46s
[INFO] running `Command { std: "docker" "inspect" "c2f4f15b0ee014955957e2cd281c44502879ecb05eaf3034d397771ada9a3249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f4f15b0ee014955957e2cd281c44502879ecb05eaf3034d397771ada9a3249", kill_on_drop: false }`
[INFO] [stdout] c2f4f15b0ee014955957e2cd281c44502879ecb05eaf3034d397771ada9a3249