[INFO] fetching crate rusty-fork 0.3.0...
[INFO] checking rusty-fork-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate rusty-fork 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rusty-fork 0.3.0 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 rusty-fork 0.3.0
[INFO] finished tweaking crates.io crate rusty-fork 0.3.0
[INFO] tweaked toml for crates.io crate rusty-fork 0.3.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 21 packages
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 87942c3d9fe22207532eabb3730d74951679f1885e1743e1c5f0656e873e9afb
[INFO] running `Command { std: "docker" "start" "-a" "87942c3d9fe22207532eabb3730d74951679f1885e1743e1c5f0656e873e9afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87942c3d9fe22207532eabb3730d74951679f1885e1743e1c5f0656e873e9afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87942c3d9fe22207532eabb3730d74951679f1885e1743e1c5f0656e873e9afb", kill_on_drop: false }`
[INFO] [stdout] 87942c3d9fe22207532eabb3730d74951679f1885e1743e1c5f0656e873e9afb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] dd3ffd7ff71c6fadcbdd6b4f9b8757359075279437475a992cc728fd513c6a88
[INFO] running `Command { std: "docker" "start" "-a" "dd3ffd7ff71c6fadcbdd6b4f9b8757359075279437475a992cc728fd513c6a88", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking rusty-fork v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `fnv` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use fnv;
[INFO] [stdout]    |     ^^^ the item `fnv` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tempfile` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use tempfile;
[INFO] [stdout]    |     ^^^^^^^^ the item `tempfile` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fnv` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use fnv;
[INFO] [stdout]    |     ^^^ the item `fnv` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tempfile` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use tempfile;
[INFO] [stdout]    |     ^^^^^^^^ the item `tempfile` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "dd3ffd7ff71c6fadcbdd6b4f9b8757359075279437475a992cc728fd513c6a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd3ffd7ff71c6fadcbdd6b4f9b8757359075279437475a992cc728fd513c6a88", kill_on_drop: false }`
[INFO] [stdout] dd3ffd7ff71c6fadcbdd6b4f9b8757359075279437475a992cc728fd513c6a88
[INFO] checking rusty-fork-0.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate rusty-fork 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate rusty-fork 0.3.0 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 rusty-fork 0.3.0
[INFO] finished tweaking crates.io crate rusty-fork 0.3.0
[INFO] tweaked toml for crates.io crate rusty-fork 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bf424973734048dc40d54d9605561f0f91ca13a7012d00985d85b0ca6381ebfc
[INFO] running `Command { std: "docker" "start" "-a" "bf424973734048dc40d54d9605561f0f91ca13a7012d00985d85b0ca6381ebfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf424973734048dc40d54d9605561f0f91ca13a7012d00985d85b0ca6381ebfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf424973734048dc40d54d9605561f0f91ca13a7012d00985d85b0ca6381ebfc", kill_on_drop: false }`
[INFO] [stdout] bf424973734048dc40d54d9605561f0f91ca13a7012d00985d85b0ca6381ebfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 68c28d9d252f07a113bb7f66466a86019bf49e966647b82e88ebc2a255b90d92
[INFO] running `Command { std: "docker" "start" "-a" "68c28d9d252f07a113bb7f66466a86019bf49e966647b82e88ebc2a255b90d92", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking rusty-fork v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `fnv` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use fnv;
[INFO] [stdout]    |     ^^^ the item `fnv` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tempfile` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use tempfile;
[INFO] [stdout]    |     ^^^^^^^^ the item `tempfile` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fnv` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use fnv;
[INFO] [stdout]    |     ^^^ the item `fnv` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tempfile` is imported redundantly
[INFO] [stdout]   --> src/fork.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use tempfile;
[INFO] [stdout]    |     ^^^^^^^^ the item `tempfile` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "68c28d9d252f07a113bb7f66466a86019bf49e966647b82e88ebc2a255b90d92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68c28d9d252f07a113bb7f66466a86019bf49e966647b82e88ebc2a255b90d92", kill_on_drop: false }`
[INFO] [stdout] 68c28d9d252f07a113bb7f66466a86019bf49e966647b82e88ebc2a255b90d92