[INFO] fetching crate named_args 0.0.1...
[INFO] testing named_args-0.0.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate named_args 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate named_args 0.0.1
[INFO] finished tweaking crates.io crate named_args 0.0.1
[INFO] tweaked toml for crates.io crate named_args 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate named_args 0.0.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate named_args 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dead5857e4ffcee9af2f3128333d7e2b28dcb98d4f15d0205f5dd4338d6f8aa
[INFO] running `Command { std: "docker" "start" "-a" "4dead5857e4ffcee9af2f3128333d7e2b28dcb98d4f15d0205f5dd4338d6f8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dead5857e4ffcee9af2f3128333d7e2b28dcb98d4f15d0205f5dd4338d6f8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dead5857e4ffcee9af2f3128333d7e2b28dcb98d4f15d0205f5dd4338d6f8aa", kill_on_drop: false }`
[INFO] [stdout] 4dead5857e4ffcee9af2f3128333d7e2b28dcb98d4f15d0205f5dd4338d6f8aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aec16686aa908fe6ad7abe9d4ed9df729c395f00c895f7c93a9ce94c094c2ef4
[INFO] running `Command { std: "docker" "start" "-a" "aec16686aa908fe6ad7abe9d4ed9df729c395f00c895f7c93a9ce94c094c2ef4", kill_on_drop: false }`
[INFO] [stderr]    Compiling named_args v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/poc.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/poc.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/poc.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "aec16686aa908fe6ad7abe9d4ed9df729c395f00c895f7c93a9ce94c094c2ef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aec16686aa908fe6ad7abe9d4ed9df729c395f00c895f7c93a9ce94c094c2ef4", kill_on_drop: false }`
[INFO] [stdout] aec16686aa908fe6ad7abe9d4ed9df729c395f00c895f7c93a9ce94c094c2ef4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dca0884e23e45eabb7d66598f1468c18a4d741e44ef280d80cf62feb1acedd9
[INFO] running `Command { std: "docker" "start" "-a" "7dca0884e23e45eabb7d66598f1468c18a4d741e44ef280d80cf62feb1acedd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling named_args v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/poc.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/poc.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/poc.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "7dca0884e23e45eabb7d66598f1468c18a4d741e44ef280d80cf62feb1acedd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dca0884e23e45eabb7d66598f1468c18a4d741e44ef280d80cf62feb1acedd9", kill_on_drop: false }`
[INFO] [stdout] 7dca0884e23e45eabb7d66598f1468c18a4d741e44ef280d80cf62feb1acedd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1326c88ffd59a754442ad2b73a00aa0fc65afb7dbb269ac97eac0f0f3414d40b
[INFO] running `Command { std: "docker" "start" "-a" "1326c88ffd59a754442ad2b73a00aa0fc65afb7dbb269ac97eac0f0f3414d40b", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stdout] 
[INFO] [stderr]   --> src/poc.rs:12:24
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/poc.rs:12:40
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stderr]    |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/poc.rs:12:48
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stderr]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: `named_args` (bin "named_args" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/named_args-60e40b7ecb8c0cd0)
[INFO] running `Command { std: "docker" "inspect" "1326c88ffd59a754442ad2b73a00aa0fc65afb7dbb269ac97eac0f0f3414d40b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1326c88ffd59a754442ad2b73a00aa0fc65afb7dbb269ac97eac0f0f3414d40b", kill_on_drop: false }`
[INFO] [stdout] 1326c88ffd59a754442ad2b73a00aa0fc65afb7dbb269ac97eac0f0f3414d40b