[INFO] cloning repository https://github.com/mikkurogue/fview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikkurogue/fview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikkurogue%2Ffview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikkurogue%2Ffview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6559d201440729dc96890a816965f223c319ff4a
[INFO] checking mikkurogue/fview against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikkurogue%2Ffview" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mikkurogue/fview
[INFO] finished tweaking git repo https://github.com/mikkurogue/fview
[INFO] tweaked toml for git repo https://github.com/mikkurogue/fview written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mikkurogue/fview 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 git repo https://github.com/mikkurogue/fview 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1c594b665f7c306902afacb3b66a167b90f93ac0b0b12b97c0ebaa29f9b80f17
[INFO] running `Command { std: "docker" "start" "-a" "1c594b665f7c306902afacb3b66a167b90f93ac0b0b12b97c0ebaa29f9b80f17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c594b665f7c306902afacb3b66a167b90f93ac0b0b12b97c0ebaa29f9b80f17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c594b665f7c306902afacb3b66a167b90f93ac0b0b12b97c0ebaa29f9b80f17", kill_on_drop: false }`
[INFO] [stdout] 1c594b665f7c306902afacb3b66a167b90f93ac0b0b12b97c0ebaa29f9b80f17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c86522cc2e6724edd7de4239c7779f507ee196f7d86ec82601e9d4b264854d98
[INFO] running `Command { std: "docker" "start" "-a" "c86522cc2e6724edd7de4239c7779f507ee196f7d86ec82601e9d4b264854d98", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]    Compiling chrono_lc v0.1.7
[INFO] [stderr]     Checking fview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, !>
[INFO] [stdout]    --> src/config.rs:302:16
[INFO] [stdout]     |
[INFO] [stdout] 302 |       let name = get_file_name(entry.clone(), canonicalize).map_err(|e| {
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 303 | |         eprintln!("{}", e);
[INFO] [stdout] 304 | |         std::process::exit(1);
[INFO] [stdout] 305 | |     });
[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, !>
[INFO] [stdout]    --> src/config.rs:323:16
[INFO] [stdout]     |
[INFO] [stdout] 323 |     let name = name.ok().map(|n| n.to_string());
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fview` (bin "fview" test) 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, !>
[INFO] [stdout]    --> src/config.rs:302:16
[INFO] [stdout]     |
[INFO] [stdout] 302 |       let name = get_file_name(entry.clone(), canonicalize).map_err(|e| {
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 303 | |         eprintln!("{}", e);
[INFO] [stdout] 304 | |         std::process::exit(1);
[INFO] [stdout] 305 | |     });
[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, !>
[INFO] [stdout]    --> src/config.rs:323:16
[INFO] [stdout]     |
[INFO] [stdout] 323 |     let name = name.ok().map(|n| n.to_string());
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fview` (bin "fview") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c86522cc2e6724edd7de4239c7779f507ee196f7d86ec82601e9d4b264854d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c86522cc2e6724edd7de4239c7779f507ee196f7d86ec82601e9d4b264854d98", kill_on_drop: false }`
[INFO] [stdout] c86522cc2e6724edd7de4239c7779f507ee196f7d86ec82601e9d4b264854d98