[INFO] cloning repository https://github.com/chiral-data/chiral-client-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chiral-data/chiral-client-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchiral-data%2Fchiral-client-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchiral-data%2Fchiral-client-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32ee1b3342646367a0e596e15ae913bf4a6a84cd
[INFO] checking chiral-data/chiral-client-rust against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchiral-data%2Fchiral-client-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chiral-data/chiral-client-rust
[INFO] finished tweaking git repo https://github.com/chiral-data/chiral-client-rust
[INFO] tweaked toml for git repo https://github.com/chiral-data/chiral-client-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chiral-data/chiral-client-rust on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chiral-data/chiral-client-rust 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffc193ee8ad9e27350f1a9fa12240f4fac06cf9941bb13180a96e35640d0a8a3
[INFO] running `Command { std: "docker" "start" "-a" "ffc193ee8ad9e27350f1a9fa12240f4fac06cf9941bb13180a96e35640d0a8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffc193ee8ad9e27350f1a9fa12240f4fac06cf9941bb13180a96e35640d0a8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffc193ee8ad9e27350f1a9fa12240f4fac06cf9941bb13180a96e35640d0a8a3", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a46d2e8722553d5f7db17c9034cb1a169f09fcf9bd56940d7aa1122c3d543c0c
[INFO] running `Command { std: "docker" "start" "-a" "a46d2e8722553d5f7db17c9034cb1a169f09fcf9bd56940d7aa1122c3d543c0c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling chiral-client v0.2.2 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/file.rs:492:14
[INFO] [stdout]     |
[INFO] [stdout] 492 |         let (handle, addr, shutdown_tx) = spawn_test_ftp_server_with_shutdown_ready();
[INFO] [stdout]     |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shutdown_tx`
[INFO] [stdout]    --> src/file.rs:492:28
[INFO] [stdout]     |
[INFO] [stdout] 492 |         let (handle, addr, shutdown_tx) = spawn_test_ftp_server_with_shutdown_ready();
[INFO] [stdout]     |                            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_shutdown_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/file.rs:512:9
[INFO] [stdout]     |
[INFO] [stdout] 512 |         client.change_directory("upload1");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 512 |         let _ = client.change_directory("upload1");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 24s
[INFO] running `Command { std: "docker" "inspect" "a46d2e8722553d5f7db17c9034cb1a169f09fcf9bd56940d7aa1122c3d543c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a46d2e8722553d5f7db17c9034cb1a169f09fcf9bd56940d7aa1122c3d543c0c", kill_on_drop: false }`
[INFO] [stdout] a46d2e8722553d5f7db17c9034cb1a169f09fcf9bd56940d7aa1122c3d543c0c