[INFO] fetching crate elfcat 0.1.10...
[INFO] checking elfcat-0.1.10 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate elfcat 0.1.10 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate elfcat 0.1.10
[INFO] finished tweaking crates.io crate elfcat 0.1.10
[INFO] tweaked toml for crates.io crate elfcat 0.1.10 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate elfcat 0.1.10 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate elfcat 0.1.10 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 967df997de9e996583852251b1560dc47b509443b8efad8e2e307de89280fda9
[INFO] running `Command { std: "docker" "start" "-a" "967df997de9e996583852251b1560dc47b509443b8efad8e2e307de89280fda9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "967df997de9e996583852251b1560dc47b509443b8efad8e2e307de89280fda9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "967df997de9e996583852251b1560dc47b509443b8efad8e2e307de89280fda9", kill_on_drop: false }`
[INFO] [stdout] 967df997de9e996583852251b1560dc47b509443b8efad8e2e307de89280fda9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3949da7557d1d99af5bb97a2ac46ce98622c17de36301f1f6c26dc5f3ca7abbf
[INFO] running `Command { std: "docker" "start" "-a" "3949da7557d1d99af5bb97a2ac46ce98622c17de36301f1f6c26dc5f3ca7abbf", kill_on_drop: false }`
[INFO] [stderr]     Checking elfcat v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `e_ident` and `e_version` are never read
[INFO] [stdout]   --> src/elf/elf32.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Elf32Ehdr {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 11 |     e_ident: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     e_version: Elf32Word,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `p_paddr` is never read
[INFO] [stdout]   --> src/elf/elf32.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Elf32Phdr {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     p_paddr: Elf32Addr,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `e_ident` and `e_version` are never read
[INFO] [stdout]   --> src/elf/elf64.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Elf64Ehdr {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 12 |     e_ident: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     e_version: Elf64Word,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `p_paddr` is never read
[INFO] [stdout]   --> src/elf/elf64.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Elf64Phdr {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     p_paddr: Elf64Addr,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/elf/elfxx.rs:66:9
[INFO] [stdout]     |
[INFO] [stdout]  66 | /         $name
[INFO] [stdout]  67 | |             .$field()
[INFO] [stdout]  68 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout] ...
[INFO] [stdout] 250 |           let flags = read_field!(shdr, sh_flags)?;
[INFO] [stdout]     |                       --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `read_field` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `elfcat` (bin "elfcat") due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `e_ident` and `e_version` are never read
[INFO] [stdout]   --> src/elf/elf32.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Elf32Ehdr {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 11 |     e_ident: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     e_version: Elf32Word,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `p_paddr` is never read
[INFO] [stdout]   --> src/elf/elf32.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Elf32Phdr {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     p_paddr: Elf32Addr,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `e_ident` and `e_version` are never read
[INFO] [stdout]   --> src/elf/elf64.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Elf64Ehdr {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 12 |     e_ident: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     e_version: Elf64Word,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `p_paddr` is never read
[INFO] [stdout]   --> src/elf/elf64.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Elf64Phdr {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     p_paddr: Elf64Addr,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/elf/elfxx.rs:66:9
[INFO] [stdout]     |
[INFO] [stdout]  66 | /         $name
[INFO] [stdout]  67 | |             .$field()
[INFO] [stdout]  68 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout] ...
[INFO] [stdout] 250 |           let flags = read_field!(shdr, sh_flags)?;
[INFO] [stdout]     |                       --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `read_field` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `elfcat` (bin "elfcat" test) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3949da7557d1d99af5bb97a2ac46ce98622c17de36301f1f6c26dc5f3ca7abbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3949da7557d1d99af5bb97a2ac46ce98622c17de36301f1f6c26dc5f3ca7abbf", kill_on_drop: false }`
[INFO] [stdout] 3949da7557d1d99af5bb97a2ac46ce98622c17de36301f1f6c26dc5f3ca7abbf