[INFO] fetching crate userprompt 0.3.4...
[INFO] building userprompt-0.3.4 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate userprompt 0.3.4 into /workspace/builds/worker-6-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-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate userprompt 0.3.4 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56f6ebbf3cd02000305c2475bc4877216952e01b85f8957b273d29538bbec0ed
[INFO] running `Command { std: "docker" "start" "-a" "56f6ebbf3cd02000305c2475bc4877216952e01b85f8957b273d29538bbec0ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56f6ebbf3cd02000305c2475bc4877216952e01b85f8957b273d29538bbec0ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56f6ebbf3cd02000305c2475bc4877216952e01b85f8957b273d29538bbec0ed", kill_on_drop: false }`
[INFO] [stdout] 56f6ebbf3cd02000305c2475bc4877216952e01b85f8957b273d29538bbec0ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0033570d7e0784724a7aa036334229fc67a7762df44145367c372066a5f9297
[INFO] running `Command { std: "docker" "start" "-a" "c0033570d7e0784724a7aa036334229fc67a7762df44145367c372066a5f9297", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling userprompt_derive v0.0.4
[INFO] [stderr]    Compiling rtoolbox v0.0.3
[INFO] [stderr]    Compiling rpassword v7.4.0
[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 `dev` profile [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `Command { std: "docker" "inspect" "c0033570d7e0784724a7aa036334229fc67a7762df44145367c372066a5f9297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0033570d7e0784724a7aa036334229fc67a7762df44145367c372066a5f9297", kill_on_drop: false }`
[INFO] [stdout] c0033570d7e0784724a7aa036334229fc67a7762df44145367c372066a5f9297
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29bc7569f59aaa3bef3f7f6a96157ffac9e2d72d28f45803f350c008ddbfad11
[INFO] running `Command { std: "docker" "start" "-a" "29bc7569f59aaa3bef3f7f6a96157ffac9e2d72d28f45803f350c008ddbfad11", kill_on_drop: false }`
[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] [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 0.47s
[INFO] running `Command { std: "docker" "inspect" "29bc7569f59aaa3bef3f7f6a96157ffac9e2d72d28f45803f350c008ddbfad11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29bc7569f59aaa3bef3f7f6a96157ffac9e2d72d28f45803f350c008ddbfad11", kill_on_drop: false }`
[INFO] [stdout] 29bc7569f59aaa3bef3f7f6a96157ffac9e2d72d28f45803f350c008ddbfad11