[INFO] fetching crate urpc 0.2.0...
[INFO] checking urpc-0.2.0 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate urpc 0.2.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate urpc 0.2.0 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate urpc 0.2.0
[INFO] finished tweaking crates.io crate urpc 0.2.0
[INFO] tweaked toml for crates.io crate urpc 0.2.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate urpc 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cb20eb7dda150346f6b24d015163b4c50c7da04a380e2893994649bf45e48093
[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" "cb20eb7dda150346f6b24d015163b4c50c7da04a380e2893994649bf45e48093"`
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling heapless v0.5.1
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[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]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking postcard v0.4.2
[INFO] [stderr]     Checking urpc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/client.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 | use core::mem::{self, swap};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/client.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 | use core::mem::{self, swap};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `write_buf_len` is never read
[INFO] [stderr]   --> examples/requests.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |         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:86:21
[INFO] [stderr]    |
[INFO] [stderr] 86 |                     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: variable does not need to be mutable
[INFO] [stderr]   --> examples/requests.rs:99:37
[INFO] [stderr]    |
[INFO] [stderr] 99 | ...                   let mut opt_buf = recv_bytes.get_opt_buf(&mut write_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: constant `buf_len` should have an upper case name
[INFO] [stderr]   --> examples/requests.rs:29:11
[INFO] [stderr]    |
[INFO] [stderr] 29 |     const buf_len: usize = 4096;
[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 36.50s
[INFO] running `"docker" "inspect" "cb20eb7dda150346f6b24d015163b4c50c7da04a380e2893994649bf45e48093"`
[INFO] running `"docker" "rm" "-f" "cb20eb7dda150346f6b24d015163b4c50c7da04a380e2893994649bf45e48093"`
[INFO] [stdout] cb20eb7dda150346f6b24d015163b4c50c7da04a380e2893994649bf45e48093