[INFO] cloning repository https://github.com/arctic-hen7/vaster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arctic-hen7/vaster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farctic-hen7%2Fvaster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farctic-hen7%2Fvaster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad43ea5cf49968574a11b4bf2ac60a7acae9b687
[INFO] checking arctic-hen7/vaster 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%2Farctic-hen7%2Fvaster" "/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/arctic-hen7/vaster
[INFO] finished tweaking git repo https://github.com/arctic-hen7/vaster
[INFO] tweaked toml for git repo https://github.com/arctic-hen7/vaster written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arctic-hen7/vaster 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/arctic-hen7/vaster 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] 8638d6d722b0a53bc990de5cbc582941ea8c0461f221adc11f033994bc94bd4a
[INFO] running `Command { std: "docker" "start" "-a" "8638d6d722b0a53bc990de5cbc582941ea8c0461f221adc11f033994bc94bd4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8638d6d722b0a53bc990de5cbc582941ea8c0461f221adc11f033994bc94bd4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8638d6d722b0a53bc990de5cbc582941ea8c0461f221adc11f033994bc94bd4a", kill_on_drop: false }`
[INFO] [stdout] 8638d6d722b0a53bc990de5cbc582941ea8c0461f221adc11f033994bc94bd4a
[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] df29f9bc25cb4c06deb75bc577853b591f3d0c55f6955ca594b56534a5b06c8b
[INFO] running `Command { std: "docker" "start" "-a" "df29f9bc25cb4c06deb75bc577853b591f3d0c55f6955ca594b56534a5b06c8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking fmterr v0.1.1
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling clap_derive v3.2.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking clap v3.2.19
[INFO] [stderr]     Checking vaster v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let res = core();
[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<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |     match res {
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |   fn core() -> Result<i32, Error> {
[INFO] [stdout]    |  _________________________________^
[INFO] [stdout] 24 | |     let opts = Opts::parse();
[INFO] [stdout] 25 | |
[INFO] [stdout] 26 | |     let exit_code = match opts.subcmd {
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     Ok(exit_code)
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Ok(exit_code)
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vaster` (bin "vaster" test) due to 4 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<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let res = core();
[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<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |     match res {
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |   fn core() -> Result<i32, Error> {
[INFO] [stdout]    |  _________________________________^
[INFO] [stdout] 24 | |     let opts = Opts::parse();
[INFO] [stdout] 25 | |
[INFO] [stdout] 26 | |     let exit_code = match opts.subcmd {
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     Ok(exit_code)
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, errors::Error>
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Ok(exit_code)
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vaster` (bin "vaster") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "df29f9bc25cb4c06deb75bc577853b591f3d0c55f6955ca594b56534a5b06c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df29f9bc25cb4c06deb75bc577853b591f3d0c55f6955ca594b56534a5b06c8b", kill_on_drop: false }`
[INFO] [stdout] df29f9bc25cb4c06deb75bc577853b591f3d0c55f6955ca594b56534a5b06c8b
