[INFO] crate urpc 0.1.0-alpha.1 is already in cache
[INFO] checking urpc-0.1.0-alpha.1 against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate urpc 0.1.0-alpha.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate urpc 0.1.0-alpha.1 on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate urpc 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate urpc 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate urpc 0.1.0-alpha.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate urpc 0.1.0-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 68b741e45ba41a765bbbdf803a52b26bb56d01ebb41aeeaa01971b22070c6fdc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "68b741e45ba41a765bbbdf803a52b26bb56d01ebb41aeeaa01971b22070c6fdc"`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling heapless v0.5.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stderr]     Checking hex v0.4.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.0
[INFO] [stderr]     Checking hash32 v0.1.0
[INFO] [stderr]     Checking postcard v0.4.2
[INFO] [stderr]     Checking urpc v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `rep_header`
[INFO] [stderr]    --> src/client.rs:186:19
[INFO] [stderr]     |
[INFO] [stderr] 186 |             Some((rep_header, rep_body_buf, opt_buf)) => Some(
[INFO] [stderr]     |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_rep_header`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rep_header`
[INFO] [stderr]    --> src/client.rs:201:19
[INFO] [stderr]     |
[INFO] [stderr] 201 |             Some((rep_header, rep_body_buf, _opt_buf)) => {
[INFO] [stderr]     |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_rep_header`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rep_header_buf_len`
[INFO] [stderr]    --> src/client.rs:370:25
[INFO] [stderr]     |
[INFO] [stderr] 370 |                     let rep_header_buf_len = rep_header.buf_len;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rep_header_buf_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/server.rs:45:28
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn reply_err(self, err: u8, mut reply_buf: &mut [u8]) -> Result<usize> {
[INFO] [stderr]    |                            ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rep_header`
[INFO] [stderr]    --> src/client.rs:186:19
[INFO] [stderr]     |
[INFO] [stderr] 186 |             Some((rep_header, rep_body_buf, opt_buf)) => Some(
[INFO] [stderr]     |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_rep_header`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rep_header`
[INFO] [stderr]    --> src/client.rs:201:19
[INFO] [stderr]     |
[INFO] [stderr] 201 |             Some((rep_header, rep_body_buf, _opt_buf)) => {
[INFO] [stderr]     |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_rep_header`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rep_header_buf_len`
[INFO] [stderr]    --> src/client.rs:370:25
[INFO] [stderr]     |
[INFO] [stderr] 370 |                     let rep_header_buf_len = rep_header.buf_len;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rep_header_buf_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/server.rs:45:28
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn reply_err(self, err: u8, mut reply_buf: &mut [u8]) -> Result<usize> {
[INFO] [stderr]    |                            ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:374:46
[INFO] [stderr]     |
[INFO] [stderr] 374 |                 State::RecvdBody(rep_header, mut rep_body_buf, opt_buf) => {
[INFO] [stderr]     |                                              ----^^^^^^^^^^^^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:374:46
[INFO] [stderr]     |
[INFO] [stderr] 374 |                 State::RecvdBody(rep_header, mut rep_body_buf, opt_buf) => {
[INFO] [stderr]     |                                              ----^^^^^^^^^^^^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `write_buf_len` is never read
[INFO] [stderr]   --> examples/requests.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut write_buf_len = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `read_len` is never read
[INFO] [stderr]   --> examples/requests.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 read_len = consts::REQ_HEADER_LEN;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: constant `buf_len` should have an upper case name
[INFO] [stderr]   --> examples/requests.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 21 |     const buf_len: usize = 32;
[INFO] [stderr]    |           ^^^^^^^ help: convert the identifier to upper case: `BUF_LEN`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.11s
[INFO] running `"docker" "inspect" "68b741e45ba41a765bbbdf803a52b26bb56d01ebb41aeeaa01971b22070c6fdc"`
[INFO] running `"docker" "rm" "-f" "68b741e45ba41a765bbbdf803a52b26bb56d01ebb41aeeaa01971b22070c6fdc"`
[INFO] [stdout] 68b741e45ba41a765bbbdf803a52b26bb56d01ebb41aeeaa01971b22070c6fdc