[INFO] fetching crate rce 0.0.3...
[INFO] checking rce-0.0.3 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate rce 0.0.3 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rce 0.0.3
[INFO] finished tweaking crates.io crate rce 0.0.3
[INFO] tweaked toml for crates.io crate rce 0.0.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rce 0.0.3 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06246746d14f69f2c55df460aedb97644940bc9eadf92eb81401ae7de3c1b648
[INFO] running `Command { std: "docker" "start" "-a" "06246746d14f69f2c55df460aedb97644940bc9eadf92eb81401ae7de3c1b648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06246746d14f69f2c55df460aedb97644940bc9eadf92eb81401ae7de3c1b648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06246746d14f69f2c55df460aedb97644940bc9eadf92eb81401ae7de3c1b648", kill_on_drop: false }`
[INFO] [stdout] 06246746d14f69f2c55df460aedb97644940bc9eadf92eb81401ae7de3c1b648
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db75983f783a98f4cf671a6c5dd03c60417ec5a3f46f20be4bd81b197e8d979e
[INFO] running `Command { std: "docker" "start" "-a" "db75983f783a98f4cf671a6c5dd03c60417ec5a3f46f20be4bd81b197e8d979e", kill_on_drop: false }`
[INFO] [stderr]     Checking rce v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:169:38
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let (invoker, short_invoker, n) = invocation.to_full_and_short();
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:169:38
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let (invoker, short_invoker, n) = invocation.to_full_and_short();
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:212:38
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let (invoker, short_invoker, n) = invocation.to_full_and_short();
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:212:38
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let (invoker, short_invoker, n) = invocation.to_full_and_short();
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command2`
[INFO] [stdout]    --> src/lib.rs:493:13
[INFO] [stdout]     |
[INFO] [stdout] 493 |         let command2 = interface.add_command(Invoker::Word("yeah"), vec![arg2], "a command to do other! things");
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flag`
[INFO] [stdout]    --> src/lib.rs:495:13
[INFO] [stdout]     |
[INFO] [stdout] 495 |         let flag = interface.add_flag(Invoker::DashAndDoubleDash("f", "flag"), "enables the flag");
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_flag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_arguments` is never read
[INFO] [stdout]    --> src/lib.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub struct CommandInterface {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 127 |     n_arguments: HashMap<u8, ArgumentReference>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_arguments` is never read
[INFO] [stdout]    --> src/lib.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub struct CommandInterface {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 127 |     n_arguments: HashMap<u8, ArgumentReference>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "db75983f783a98f4cf671a6c5dd03c60417ec5a3f46f20be4bd81b197e8d979e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db75983f783a98f4cf671a6c5dd03c60417ec5a3f46f20be4bd81b197e8d979e", kill_on_drop: false }`
[INFO] [stdout] db75983f783a98f4cf671a6c5dd03c60417ec5a3f46f20be4bd81b197e8d979e