[INFO] fetching crate elf2uf2-rs 1.3.8...
[INFO] checking elf2uf2-rs-1.3.8 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate elf2uf2-rs 1.3.8 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate elf2uf2-rs 1.3.8 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 elf2uf2-rs 1.3.8
[INFO] finished tweaking crates.io crate elf2uf2-rs 1.3.8
[INFO] tweaked toml for crates.io crate elf2uf2-rs 1.3.8 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate elf2uf2-rs 1.3.8 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.9
[INFO] [stderr]   Downloaded quote v1.0.28
[INFO] [stderr]   Downloaded libudev-sys v0.1.4
[INFO] [stderr]   Downloaded proc-macro2 v1.0.60
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded assert_into v1.1.0
[INFO] [stderr]   Downloaded hermit-abi v0.2.6
[INFO] [stderr]   Downloaded num_cpus v1.15.0
[INFO] [stderr]   Downloaded clap_derive v3.2.25
[INFO] [stderr]   Downloaded nix v0.26.2
[INFO] [stderr]   Downloaded zerocopy-derive v0.3.2
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded libc v0.2.146
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded bitflags v2.0.2
[INFO] [stderr]   Downloaded libudev v0.3.0
[INFO] [stderr]   Downloaded mach2 v0.4.1
[INFO] [stderr]   Downloaded serialport v4.2.1
[INFO] [stderr]   Downloaded ntapi v0.4.1
[INFO] [stderr]   Downloaded sysinfo v0.28.4
[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] 8e80c66145f264e586b33c7c7774b5b0f5c6cb4546551c8949f8216d430bd2d3
[INFO] running `Command { std: "docker" "start" "-a" "8e80c66145f264e586b33c7c7774b5b0f5c6cb4546551c8949f8216d430bd2d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e80c66145f264e586b33c7c7774b5b0f5c6cb4546551c8949f8216d430bd2d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e80c66145f264e586b33c7c7774b5b0f5c6cb4546551c8949f8216d430bd2d3", kill_on_drop: false }`
[INFO] [stdout] 8e80c66145f264e586b33c7c7774b5b0f5c6cb4546551c8949f8216d430bd2d3
[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] 52a02a1ea6dce89f41b5f99538236804259d176fd779d7064922df8db09914e0
[INFO] running `Command { std: "docker" "start" "-a" "52a02a1ea6dce89f41b5f99538236804259d176fd779d7064922df8db09914e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking os_str_bytes v6.5.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bitflags v2.0.2
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking assert_into v1.1.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking pbr v1.1.1
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking serialport v4.2.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking sysinfo v0.28.4
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]    Compiling zerocopy-derive v0.3.2
[INFO] [stderr]     Checking zerocopy v0.6.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking elf2uf2-rs v1.3.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `abi_version`, `pad`, and `typ` are never read
[INFO] [stdout]   --> src/elf.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct ElfHeader {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub abi_version: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 32 |     pub pad: [u8; 7],
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 33 |     pub typ: u16,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ElfHeader` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ph_offset`, `sh_offset`, `sh_entry_size`, `sh_num`, and `sh_str_index` are never read
[INFO] [stdout]   --> src/elf.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Elf32Header {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub ph_offset: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 44 |     pub sh_offset: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub sh_entry_size: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 50 |     pub sh_num: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 51 |     pub sh_str_index: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Elf32Header` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `flags` and `align` are never read
[INFO] [stdout]   --> src/elf.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Elf32PhEntry {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub flags: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 64 |     pub align: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Elf32PhEntry` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `abi_version`, `pad`, and `typ` are never read
[INFO] [stdout]   --> src/elf.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct ElfHeader {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub abi_version: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 32 |     pub pad: [u8; 7],
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 33 |     pub typ: u16,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ElfHeader` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ph_offset`, `sh_offset`, `sh_entry_size`, `sh_num`, and `sh_str_index` are never read
[INFO] [stdout]   --> src/elf.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Elf32Header {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub ph_offset: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 44 |     pub sh_offset: u32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub sh_entry_size: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 50 |     pub sh_num: u16,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 51 |     pub sh_str_index: u16,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Elf32Header` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `flags` and `align` are never read
[INFO] [stdout]   --> src/elf.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Elf32PhEntry {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub flags: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 64 |     pub align: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Elf32PhEntry` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.47s
[INFO] running `Command { std: "docker" "inspect" "52a02a1ea6dce89f41b5f99538236804259d176fd779d7064922df8db09914e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a02a1ea6dce89f41b5f99538236804259d176fd779d7064922df8db09914e0", kill_on_drop: false }`
[INFO] [stdout] 52a02a1ea6dce89f41b5f99538236804259d176fd779d7064922df8db09914e0