[INFO] cloning repository https://github.com/steveklabnik/rust_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steveklabnik/rust_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Frust_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Frust_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74f81c2f8717f643e341de8b9e4feeb32f913cfa
[INFO] checking steveklabnik/rust_test against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Frust_test" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steveklabnik/rust_test on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/.cargo/config
[INFO] started tweaking git repo https://github.com/steveklabnik/rust_test
[INFO] finished tweaking git repo https://github.com/steveklabnik/rust_test
[INFO] tweaked toml for git repo https://github.com/steveklabnik/rust_test written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/steveklabnik/rust_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d362dc38d9f7be34e4f3e9811459a0a982ae85f83a72d4383f3bc2f46cd73cb5
[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" "d362dc38d9f7be34e4f3e9811459a0a982ae85f83a72d4383f3bc2f46cd73cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d362dc38d9f7be34e4f3e9811459a0a982ae85f83a72d4383f3bc2f46cd73cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d362dc38d9f7be34e4f3e9811459a0a982ae85f83a72d4383f3bc2f46cd73cb5", kill_on_drop: false }`
[INFO] [stdout] d362dc38d9f7be34e4f3e9811459a0a982ae85f83a72d4383f3bc2f46cd73cb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7545606c12c22cd4ea0fd92e17c11d11069f105849c4e483232530f2ee345188
[INFO] running `Command { std: "docker" "start" "-a" "7545606c12c22cd4ea0fd92e17c11d11069f105849c4e483232530f2ee345188", kill_on_drop: false }`
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mmap v0.1.1
[INFO] [stderr]     Checking rust_blink v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/fpga_awg.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stdout]  --> src/fpga_awg.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Write, SeekFrom, Seek};
[INFO] [stdout]   |                      ^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `fpga_awg` should have an upper camel case name
[INFO] [stdout]  --> src/fpga_awg.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct fpga_awg {
[INFO] [stdout]   |            ^^^^^^^^ help: convert the identifier to upper camel case: `FpgaAwg`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/main.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 |         while (true) {
[INFO] [stdout]    |               ^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         while (true) {
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/fpga_awg.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stdout]  --> src/fpga_awg.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Write, SeekFrom, Seek};
[INFO] [stdout]   |                      ^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `fpga_awg` should have an upper camel case name
[INFO] [stdout]  --> src/fpga_awg.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct fpga_awg {
[INFO] [stdout]   |            ^^^^^^^^ help: convert the identifier to upper camel case: `FpgaAwg`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/main.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 |         while (true) {
[INFO] [stdout]    |               ^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         while (true) {
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]   --> src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |             thread::sleep_ms(arg1.parse::<u32>().unwrap());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]   --> src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |             thread::sleep_ms(arg1.parse::<u32>().unwrap());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/fpga_awg.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Write, SeekFrom, Seek};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/fpga_awg.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Write, SeekFrom, Seek};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fpga_awg.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut f = fs::OpenOptions::new().read(true)
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mmap`
[INFO] [stdout]  --> src/fpga_awg.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         mmap: MemoryMap,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fpga_awg.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut f = fs::OpenOptions::new().read(true)
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mmap`
[INFO] [stdout]  --> src/fpga_awg.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         mmap: MemoryMap,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "7545606c12c22cd4ea0fd92e17c11d11069f105849c4e483232530f2ee345188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7545606c12c22cd4ea0fd92e17c11d11069f105849c4e483232530f2ee345188", kill_on_drop: false }`
[INFO] [stdout] 7545606c12c22cd4ea0fd92e17c11d11069f105849c4e483232530f2ee345188