[INFO] fetching crate battleship 1.3.0...
[INFO] checking battleship-1.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate battleship 1.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate battleship 1.3.0 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 crates.io crate battleship 1.3.0
[INFO] finished tweaking crates.io crate battleship 1.3.0
[INFO] tweaked toml for crates.io crate battleship 1.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate battleship 1.3.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.15
[INFO] [stderr]   Downloaded libc v0.2.108
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e22b90a8158737027a1396ff3bd57a51534f614b6dcb67545064ab094e4dd508
[INFO] running `Command { std: "docker" "start" "-a" "e22b90a8158737027a1396ff3bd57a51534f614b6dcb67545064ab094e4dd508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e22b90a8158737027a1396ff3bd57a51534f614b6dcb67545064ab094e4dd508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e22b90a8158737027a1396ff3bd57a51534f614b6dcb67545064ab094e4dd508", kill_on_drop: false }`
[INFO] [stdout] e22b90a8158737027a1396ff3bd57a51534f614b6dcb67545064ab094e4dd508
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e23ffdf94808542cfffb14c4fd3597de728d3a27cf67935d98cf2b12a40bb892
[INFO] running `Command { std: "docker" "start" "-a" "e23ffdf94808542cfffb14c4fd3597de728d3a27cf67935d98cf2b12a40bb892", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking battleship v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "e23ffdf94808542cfffb14c4fd3597de728d3a27cf67935d98cf2b12a40bb892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e23ffdf94808542cfffb14c4fd3597de728d3a27cf67935d98cf2b12a40bb892", kill_on_drop: false }`
[INFO] [stdout] e23ffdf94808542cfffb14c4fd3597de728d3a27cf67935d98cf2b12a40bb892
[INFO] checking battleship-1.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate battleship 1.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate battleship 1.3.0 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 crates.io crate battleship 1.3.0
[INFO] finished tweaking crates.io crate battleship 1.3.0
[INFO] tweaked toml for crates.io crate battleship 1.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate battleship 1.3.0 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 87de9d32909c6017e8fa7f250de4de88284e960f2431fb6624278c06beb4eede
[INFO] running `Command { std: "docker" "start" "-a" "87de9d32909c6017e8fa7f250de4de88284e960f2431fb6624278c06beb4eede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87de9d32909c6017e8fa7f250de4de88284e960f2431fb6624278c06beb4eede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87de9d32909c6017e8fa7f250de4de88284e960f2431fb6624278c06beb4eede", kill_on_drop: false }`
[INFO] [stdout] 87de9d32909c6017e8fa7f250de4de88284e960f2431fb6624278c06beb4eede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] aed659ddc6c9e7cc634309b3040e0eefff1c102fedb8be5c0ba677db09786fe0
[INFO] running `Command { std: "docker" "start" "-a" "aed659ddc6c9e7cc634309b3040e0eefff1c102fedb8be5c0ba677db09786fe0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking battleship v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "aed659ddc6c9e7cc634309b3040e0eefff1c102fedb8be5c0ba677db09786fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed659ddc6c9e7cc634309b3040e0eefff1c102fedb8be5c0ba677db09786fe0", kill_on_drop: false }`
[INFO] [stdout] aed659ddc6c9e7cc634309b3040e0eefff1c102fedb8be5c0ba677db09786fe0