[INFO] fetching crate medusa 0.3.0...
[INFO] checking medusa-0.3.0 against try#169954edd744527414c631e9af1bbdc537b0cdf2 for pr-75192
[INFO] extracting crate medusa 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate medusa 0.3.0 on toolchain 169954edd744527414c631e9af1bbdc537b0cdf2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-3/source/Cargo.toml
[INFO] crate crates.io crate medusa 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "metadata" "--no-deps" "--format-version=1", 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] 5b592b648797910daf9435fd734207ac913591e83ff11bf11f824b45a8f1f781
[INFO] running `Command { std: "docker" "start" "-a" "5b592b648797910daf9435fd734207ac913591e83ff11bf11f824b45a8f1f781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b592b648797910daf9435fd734207ac913591e83ff11bf11f824b45a8f1f781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b592b648797910daf9435fd734207ac913591e83ff11bf11f824b45a8f1f781", kill_on_drop: false }`
[INFO] [stdout] 5b592b648797910daf9435fd734207ac913591e83ff11bf11f824b45a8f1f781
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e4a7781e80ef30058c125067fd4e0f43b162387b63dcff8a5483c23f1fd06c8
[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" "7e4a7781e80ef30058c125067fd4e0f43b162387b63dcff8a5483c23f1fd06c8", kill_on_drop: false }`
[INFO] [stderr]     Checking medusa v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> examples/functions/mod.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn echo(handler: &Handler, payload: String) {
[INFO] [stdout]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> examples/functions/mod.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stdout]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]   --> examples/functions/mod.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_twice`
[INFO] [stdout]   --> examples/functions/mod.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn print_twice(handler: &Handler) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> examples/functions/mod.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn echo(handler: &Handler, payload: String) {
[INFO] [stdout]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> examples/functions/mod.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stdout]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]   --> examples/functions/mod.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> examples/functions/mod.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn echo(handler: &Handler, payload: String) {
[INFO] [stdout]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> examples/functions/mod.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stdout]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]   --> examples/functions/mod.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `show_help`
[INFO] [stdout]  --> examples/functions/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn show_help(handler: &Handler) {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_version`
[INFO] [stdout]   --> examples/functions/mod.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn get_version(handler: &Handler) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_twice`
[INFO] [stdout]   --> examples/functions/mod.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn print_twice(handler: &Handler) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "7e4a7781e80ef30058c125067fd4e0f43b162387b63dcff8a5483c23f1fd06c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e4a7781e80ef30058c125067fd4e0f43b162387b63dcff8a5483c23f1fd06c8", kill_on_drop: false }`
[INFO] [stdout] 7e4a7781e80ef30058c125067fd4e0f43b162387b63dcff8a5483c23f1fd06c8