[INFO] fetching crate devicemapper 0.34.4...
[INFO] checking devicemapper-0.34.4 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate devicemapper 0.34.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate devicemapper 0.34.4
[INFO] finished tweaking crates.io crate devicemapper 0.34.4
[INFO] tweaked toml for crates.io crate devicemapper 0.34.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate devicemapper 0.34.4 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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 104 packages to latest compatible versions
[INFO] [stderr]       Adding nix v0.29.0 (available: v0.30.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded retry v2.1.0
[INFO] [stderr]   Downloaded libmount v0.1.15
[INFO] [stderr]   Downloaded devicemapper-sys v0.3.2
[INFO] [stderr]   Downloaded loopdev-3 v0.5.2
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7b0764ff17938c2b2767008c38fa62f4b23021cce2bae5e8efb5ff0725d69da
[INFO] running `Command { std: "docker" "start" "-a" "c7b0764ff17938c2b2767008c38fa62f4b23021cce2bae5e8efb5ff0725d69da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7b0764ff17938c2b2767008c38fa62f4b23021cce2bae5e8efb5ff0725d69da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b0764ff17938c2b2767008c38fa62f4b23021cce2bae5e8efb5ff0725d69da", kill_on_drop: false }`
[INFO] [stdout] c7b0764ff17938c2b2767008c38fa62f4b23021cce2bae5e8efb5ff0725d69da
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 878b18195765f5c9c519dea716ba72cd036bfe45b284a5c4e761b67459661140
[INFO] running `Command { std: "docker" "start" "-a" "878b18195765f5c9c519dea716ba72cd036bfe45b284a5c4e761b67459661140", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling prettyplease v0.2.35
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling libloading v0.8.8
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling bindgen v0.71.1
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking anstyle-parse v0.2.7
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking anstyle-query v1.1.3
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]     Checking colorchoice v1.0.4
[INFO] [stderr]     Checking anstream v0.6.19
[INFO] [stderr]     Checking jiff v0.2.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]     Checking errno v0.3.13
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]     Checking retry v2.1.0
[INFO] [stderr]     Checking uuid v1.17.0
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking libmount v0.1.15
[INFO] [stderr]     Checking env_logger v0.11.8
[INFO] [stderr]    Compiling devicemapper-sys v0.3.2
[INFO] [stderr]    Compiling loopdev-3 v0.5.2
[INFO] [stderr]    Compiling devicemapper v0.34.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/core/device.rs:60:21
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let major = unsafe { major(val) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `-D unused-unsafe` implied by `-D unused`
[INFO] [stdout]    = help: to override `-D unused` add `#[allow(unused_unsafe)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/core/device.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let minor = unsafe { minor(val) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `devicemapper` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/core/device.rs:60:21
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let major = unsafe { major(val) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `-D unused-unsafe` implied by `-D unused`
[INFO] [stdout]    = help: to override `-D unused` add `#[allow(unused_unsafe)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/core/device.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let minor = unsafe { minor(val) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `devicemapper` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "878b18195765f5c9c519dea716ba72cd036bfe45b284a5c4e761b67459661140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "878b18195765f5c9c519dea716ba72cd036bfe45b284a5c4e761b67459661140", kill_on_drop: false }`
[INFO] [stdout] 878b18195765f5c9c519dea716ba72cd036bfe45b284a5c4e761b67459661140