[INFO] cloning repository https://github.com/guilherme/rust-mach-o-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guilherme/rust-mach-o-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilherme%2Frust-mach-o-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilherme%2Frust-mach-o-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dad0dfc8adc96d7029f1f52656c552513481dc22
[INFO] checking guilherme/rust-mach-o-parser against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilherme%2Frust-mach-o-parser" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guilherme/rust-mach-o-parser on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guilherme/rust-mach-o-parser
[INFO] finished tweaking git repo https://github.com/guilherme/rust-mach-o-parser
[INFO] tweaked toml for git repo https://github.com/guilherme/rust-mach-o-parser written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/guilherme/rust-mach-o-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 261a222f193a7cf0217693f72e8d51b9973a0c633ff8496be21ab1d64043a85a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "261a222f193a7cf0217693f72e8d51b9973a0c633ff8496be21ab1d64043a85a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "261a222f193a7cf0217693f72e8d51b9973a0c633ff8496be21ab1d64043a85a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "261a222f193a7cf0217693f72e8d51b9973a0c633ff8496be21ab1d64043a85a", kill_on_drop: false }`
[INFO] [stdout] 261a222f193a7cf0217693f72e8d51b9973a0c633ff8496be21ab1d64043a85a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4236f34a1d93d59db9c2f8b0383fdb3473a3248af8d77250f9a75648f8cb4cad
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4236f34a1d93d59db9c2f8b0383fdb3473a3248af8d77250f9a75648f8cb4cad", kill_on_drop: false }`
[INFO] [stderr]     Checking mach-o-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:39:21
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn dump_mach_header(f: &mut File, is_64: bool, should_swap: bool) {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_64`
[INFO] [stdout]   --> src/main.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn dump_mach_header(f: &mut File, is_64: bool, should_swap: bool) {
[INFO] [stdout]    |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_is_64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `should_swap`
[INFO] [stdout]   --> src/main.rs:39:48
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn dump_mach_header(f: &mut File, is_64: bool, should_swap: bool) {
[INFO] [stdout]    |                                                ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_should_swap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:39:21
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn dump_mach_header(f: &mut File, is_64: bool, should_swap: bool) {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_64`
[INFO] [stdout]   --> src/main.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn dump_mach_header(f: &mut File, is_64: bool, should_swap: bool) {
[INFO] [stdout]    |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_is_64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `should_swap`
[INFO] [stdout]   --> src/main.rs:39:48
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn dump_mach_header(f: &mut File, is_64: bool, should_swap: bool) {
[INFO] [stdout]    |                                                ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_should_swap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MH_MAGIC`
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const MH_MAGIC: u32 = 0xfeedface;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MH_MAGIC`
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const MH_MAGIC: u32 = 0xfeedface;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "4236f34a1d93d59db9c2f8b0383fdb3473a3248af8d77250f9a75648f8cb4cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4236f34a1d93d59db9c2f8b0383fdb3473a3248af8d77250f9a75648f8cb4cad", kill_on_drop: false }`
[INFO] [stdout] 4236f34a1d93d59db9c2f8b0383fdb3473a3248af8d77250f9a75648f8cb4cad