[INFO] fetching crate melwallet-cli 0.8.4...
[INFO] checking melwallet-cli-0.8.4 against try#5d96fa0e954d77528204a1ba3b8847ec083c779b for pr-153457
[INFO] extracting crate melwallet-cli 0.8.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate melwallet-cli 0.8.4
[INFO] finished tweaking crates.io crate melwallet-cli 0.8.4
[INFO] tweaked toml for crates.io crate melwallet-cli 0.8.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate melwallet-cli 0.8.4 on toolchain 5d96fa0e954d77528204a1ba3b8847ec083c779b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate melwallet-cli 0.8.4 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" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0296c727aafd1a6002e87acac2fe554b2a50846ac5f9f862e3ab673123916e4c
[INFO] running `Command { std: "docker" "start" "-a" "0296c727aafd1a6002e87acac2fe554b2a50846ac5f9f862e3ab673123916e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0296c727aafd1a6002e87acac2fe554b2a50846ac5f9f862e3ab673123916e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0296c727aafd1a6002e87acac2fe554b2a50846ac5f9f862e3ab673123916e4c", kill_on_drop: false }`
[INFO] [stdout] 0296c727aafd1a6002e87acac2fe554b2a50846ac5f9f862e3ab673123916e4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 951e3ce8cec32f92f8dc64fa75685659c49724630735e4e35c95d38fdc422dda
[INFO] running `Command { std: "docker" "start" "-a" "951e3ce8cec32f92f8dc64fa75685659c49724630735e4e35c95d38fdc422dda", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/persistent_truststore.rs:19:21
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/persistent_truststore.rs:19:21
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KillOnDrop` is never constructed
[INFO] [stdout]   --> src/main.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct KillOnDrop(Option<Child>);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KillOnDrop` is never constructed
[INFO] [stdout]   --> src/main.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct KillOnDrop(Option<Child>);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 45.50s
[INFO] running `Command { std: "docker" "inspect" "951e3ce8cec32f92f8dc64fa75685659c49724630735e4e35c95d38fdc422dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "951e3ce8cec32f92f8dc64fa75685659c49724630735e4e35c95d38fdc422dda", kill_on_drop: false }`
[INFO] [stdout] 951e3ce8cec32f92f8dc64fa75685659c49724630735e4e35c95d38fdc422dda
