[INFO] fetching crate userprompt 0.3.4...
[INFO] building userprompt-0.3.4 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate userprompt 0.3.4 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate userprompt 0.3.4
[INFO] finished tweaking crates.io crate userprompt 0.3.4
[INFO] tweaked toml for crates.io crate userprompt 0.3.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate userprompt 0.3.4 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate userprompt 0.3.4 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00671b0cf49adc8a53a6d58ab408aa00829fb7055e8c893a80db4e933493db65
[INFO] running `Command { std: "docker" "start" "-a" "00671b0cf49adc8a53a6d58ab408aa00829fb7055e8c893a80db4e933493db65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00671b0cf49adc8a53a6d58ab408aa00829fb7055e8c893a80db4e933493db65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00671b0cf49adc8a53a6d58ab408aa00829fb7055e8c893a80db4e933493db65", kill_on_drop: false }`
[INFO] [stdout] 00671b0cf49adc8a53a6d58ab408aa00829fb7055e8c893a80db4e933493db65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28a6077c034ee8b27df88363e9b4ed1f1eeb622d173f507ab2aa1912c1934acf
[INFO] running `Command { std: "docker" "start" "-a" "28a6077c034ee8b27df88363e9b4ed1f1eeb622d173f507ab2aa1912c1934acf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling rtoolbox v0.0.3
[INFO] [stderr]    Compiling rpassword v7.4.0
[INFO] [stderr]    Compiling userprompt_derive v0.0.4
[INFO] [stderr]    Compiling userprompt v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/lib.rs:983:35
[INFO] [stdout]     |
[INFO] [stdout] 983 |     fn prompt(name: Option<&str>, comment: Option<&str>) -> Result<Self, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/lib.rs:903:35
[INFO] [stdout]     |
[INFO] [stdout] 903 |     fn prompt(name: Option<&str>, comment: Option<&str>) -> Result<Self, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `selection` and `new_selection` are never read
[INFO] [stdout]    --> src/lib.rs:627:5
[INFO] [stdout]     |
[INFO] [stdout] 624 | pub struct SelectedHashMap<T> {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 627 |     selection: Option<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 628 |     #[cfg_attr(feature = "serde", serde(skip))]
[INFO] [stdout] 629 |     new_selection: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SelectedHashMap` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[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 4.03s
[INFO] running `Command { std: "docker" "inspect" "28a6077c034ee8b27df88363e9b4ed1f1eeb622d173f507ab2aa1912c1934acf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28a6077c034ee8b27df88363e9b4ed1f1eeb622d173f507ab2aa1912c1934acf", kill_on_drop: false }`
[INFO] [stdout] 28a6077c034ee8b27df88363e9b4ed1f1eeb622d173f507ab2aa1912c1934acf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c28bd36df88e301f68ee756f3629f97cc0e4ab65d9e885853b6e32478d767f3
[INFO] running `Command { std: "docker" "start" "-a" "7c28bd36df88e301f68ee756f3629f97cc0e4ab65d9e885853b6e32478d767f3", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/lib.rs:983:35
[INFO] [stdout]     |
[INFO] [stdout] 983 |     fn prompt(name: Option<&str>, comment: Option<&str>) -> Result<Self, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/lib.rs:903:35
[INFO] [stdout]     |
[INFO] [stdout] 903 |     fn prompt(name: Option<&str>, comment: Option<&str>) -> Result<Self, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `selection` and `new_selection` are never read
[INFO] [stdout]    --> src/lib.rs:627:5
[INFO] [stdout]     |
[INFO] [stdout] 624 | pub struct SelectedHashMap<T> {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 627 |     selection: Option<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 628 |     #[cfg_attr(feature = "serde", serde(skip))]
[INFO] [stdout] 629 |     new_selection: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SelectedHashMap` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling userprompt v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/lib.rs:903:35
[INFO] [stdout]     |
[INFO] [stdout] 903 |     fn prompt(name: Option<&str>, comment: Option<&str>) -> Result<Self, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/lib.rs:983:35
[INFO] [stdout]     |
[INFO] [stdout] 983 |     fn prompt(name: Option<&str>, comment: Option<&str>) -> Result<Self, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `selection` and `new_selection` are never read
[INFO] [stdout]    --> src/lib.rs:627:5
[INFO] [stdout]     |
[INFO] [stdout] 624 | pub struct SelectedHashMap<T> {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 627 |     selection: Option<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 628 |     #[cfg_attr(feature = "serde", serde(skip))]
[INFO] [stdout] 629 |     new_selection: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SelectedHashMap` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "7c28bd36df88e301f68ee756f3629f97cc0e4ab65d9e885853b6e32478d767f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c28bd36df88e301f68ee756f3629f97cc0e4ab65d9e885853b6e32478d767f3", kill_on_drop: false }`
[INFO] [stdout] 7c28bd36df88e301f68ee756f3629f97cc0e4ab65d9e885853b6e32478d767f3