[INFO] fetching crate xprompt 0.2.3...
[INFO] checking xprompt-0.2.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate xprompt 0.2.3 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate xprompt 0.2.3
[INFO] finished tweaking crates.io crate xprompt 0.2.3
[INFO] tweaked toml for crates.io crate xprompt 0.2.3 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xprompt 0.2.3 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xprompt 0.2.3 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6c83a48a9ed3da750ac0e5a45f264bb4cabb55d62c124a2eceddf7a7a42fc7b
[INFO] running `Command { std: "docker" "start" "-a" "b6c83a48a9ed3da750ac0e5a45f264bb4cabb55d62c124a2eceddf7a7a42fc7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6c83a48a9ed3da750ac0e5a45f264bb4cabb55d62c124a2eceddf7a7a42fc7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6c83a48a9ed3da750ac0e5a45f264bb4cabb55d62c124a2eceddf7a7a42fc7b", kill_on_drop: false }`
[INFO] [stdout] b6c83a48a9ed3da750ac0e5a45f264bb4cabb55d62c124a2eceddf7a7a42fc7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bfb5e7524a467a7ac5b0e712e8ee6ed4a2cd0b4d5820efd383135c4c6a0c979
[INFO] running `Command { std: "docker" "start" "-a" "3bfb5e7524a467a7ac5b0e712e8ee6ed4a2cd0b4d5820efd383135c4c6a0c979", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.35
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libgit2-sys v0.12.26+1.3.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.8
[INFO] [stderr]     Checking git2 v0.13.25
[INFO] [stderr]     Checking clap v3.0.0-rc.8
[INFO] [stderr]     Checking xprompt v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bin/xprompt.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | /     /// Path to xprompt itself (default is to detect this)
[INFO] [stdout] 64 | |     #[clap(long)]
[INFO] [stdout] 65 | |     path: Option<String>,
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bin/xprompt.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | /     /// Prompt for user input (usually '$' or '#')
[INFO] [stdout] 68 | |     #[clap(long, default_value = "$")]
[INFO] [stdout] 69 | |     input: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xprompt` (bin "xprompt") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bin/xprompt.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | /     /// Path to xprompt itself (default is to detect this)
[INFO] [stdout] 64 | |     #[clap(long)]
[INFO] [stdout] 65 | |     path: Option<String>,
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/bin/xprompt.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | /     /// Prompt for user input (usually '$' or '#')
[INFO] [stdout] 68 | |     #[clap(long, default_value = "$")]
[INFO] [stdout] 69 | |     input: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xprompt` (bin "xprompt" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3bfb5e7524a467a7ac5b0e712e8ee6ed4a2cd0b4d5820efd383135c4c6a0c979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bfb5e7524a467a7ac5b0e712e8ee6ed4a2cd0b4d5820efd383135c4c6a0c979", kill_on_drop: false }`
[INFO] [stdout] 3bfb5e7524a467a7ac5b0e712e8ee6ed4a2cd0b4d5820efd383135c4c6a0c979