[INFO] fetching crate docopt 1.1.1...
[INFO] checking docopt-1.1.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate docopt 1.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate docopt 1.1.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate docopt 1.1.1
[INFO] finished tweaking crates.io crate docopt 1.1.1
[INFO] tweaked toml for crates.io crate docopt 1.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate docopt 1.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a84171bdc1a0158fa1b060b307bbb82234a09c21d382707330a4409bc8cf2170
[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" "a84171bdc1a0158fa1b060b307bbb82234a09c21d382707330a4409bc8cf2170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a84171bdc1a0158fa1b060b307bbb82234a09c21d382707330a4409bc8cf2170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a84171bdc1a0158fa1b060b307bbb82234a09c21d382707330a4409bc8cf2170", kill_on_drop: false }`
[INFO] [stdout] a84171bdc1a0158fa1b060b307bbb82234a09c21d382707330a4409bc8cf2170
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5101cfba17eb32a07a02a42b6b689f0beba90fe7a74a6a9a2f9392cd7d87d5c
[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" "b5101cfba17eb32a07a02a42b6b689f0beba90fe7a74a6a9a2f9392cd7d87d5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking serde v1.0.124
[INFO] [stderr]     Checking docopt v1.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `arg_command`
[INFO] [stdout]   --> examples/optional_command.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     arg_command: Command,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_command`
[INFO] [stdout]   --> examples/cargo.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     arg_command: Option<Command>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_args`
[INFO] [stdout]   --> examples/cargo.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     arg_args: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flag_list`
[INFO] [stdout]   --> examples/cargo.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     flag_list: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flag_verbose`
[INFO] [stdout]   --> examples/cargo.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     flag_verbose: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_source`
[INFO] [stdout]   --> examples/cp.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     arg_source: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_dest`
[INFO] [stdout]   --> examples/cp.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     arg_dest: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_dir`
[INFO] [stdout]   --> examples/cp.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     arg_dir: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flag_archive`
[INFO] [stdout]   --> examples/cp.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     flag_archive: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_source`
[INFO] [stdout]   --> examples/verbose_multiple.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     arg_source: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_dest`
[INFO] [stdout]   --> examples/verbose_multiple.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     arg_dest: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_dir`
[INFO] [stdout]   --> examples/verbose_multiple.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     arg_dir: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flag_archive`
[INFO] [stdout]   --> examples/verbose_multiple.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     flag_archive: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flag_verbose`
[INFO] [stdout]   --> examples/verbose_multiple.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     flag_verbose: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_x`
[INFO] [stdout]   --> examples/decode.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     arg_x: Option<isize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_y`
[INFO] [stdout]   --> examples/decode.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     arg_y: Option<isize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cmd_mine`
[INFO] [stdout]   --> examples/decode.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     cmd_mine: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_file`
[INFO] [stdout]   --> src/test/mod.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |         arg_file: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cmd_info`
[INFO] [stdout]   --> src/test/mod.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         cmd_info: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cmd_update`
[INFO] [stdout]   --> src/test/mod.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         cmd_update: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_value`
[INFO] [stdout]   --> src/test/mod.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         arg_value: f64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.74s
[INFO] running `Command { std: "docker" "inspect" "b5101cfba17eb32a07a02a42b6b689f0beba90fe7a74a6a9a2f9392cd7d87d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5101cfba17eb32a07a02a42b6b689f0beba90fe7a74a6a9a2f9392cd7d87d5c", kill_on_drop: false }`
[INFO] [stdout] b5101cfba17eb32a07a02a42b6b689f0beba90fe7a74a6a9a2f9392cd7d87d5c