[INFO] crate medusa 0.3.0 is already in cache
[INFO] checking medusa-0.3.0 against try#d93021f5faa26e4f9d2719e79f9974e06aa40e17 for pr-71873
[INFO] extracting crate medusa 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate medusa 0.3.0 on toolchain d93021f5faa26e4f9d2719e79f9974e06aa40e17
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate medusa 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate medusa 0.3.0
[INFO] tweaked toml for crates.io crate medusa 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate medusa 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "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" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4946bf7d2dbd0b54632289d0839fed4ff7d52091ebe56cfbab19dfe793fc8a55
[INFO] running `"docker" "start" "-a" "4946bf7d2dbd0b54632289d0839fed4ff7d52091ebe56cfbab19dfe793fc8a55"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking medusa v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]  --> examples/functions/mod.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn echo(handler: &Handler, payload: String) {
[INFO] [stderr]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]  --> examples/functions/mod.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stderr]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]   --> examples/functions/mod.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stderr]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]  --> examples/functions/mod.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn echo(handler: &Handler, payload: String) {
[INFO] [stderr]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]  --> examples/functions/mod.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stderr]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]   --> examples/functions/mod.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stderr]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `show_help`
[INFO] [stderr]  --> examples/functions/mod.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_version`
[INFO] [stderr]   --> examples/functions/mod.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_twice`
[INFO] [stderr]   --> examples/functions/mod.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn print_twice(handler: &Handler) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]  --> examples/functions/mod.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn echo(handler: &Handler, payload: String) {
[INFO] [stderr]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]  --> examples/functions/mod.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stderr]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handler`
[INFO] [stderr]   --> examples/functions/mod.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stderr]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_twice`
[INFO] [stderr]   --> examples/functions/mod.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn print_twice(handler: &Handler) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "4946bf7d2dbd0b54632289d0839fed4ff7d52091ebe56cfbab19dfe793fc8a55"`
[INFO] running `"docker" "rm" "-f" "4946bf7d2dbd0b54632289d0839fed4ff7d52091ebe56cfbab19dfe793fc8a55"`
[INFO] [stdout] 4946bf7d2dbd0b54632289d0839fed4ff7d52091ebe56cfbab19dfe793fc8a55