[INFO] cloning repository https://github.com/erg-lang/erg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erg-lang/erg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferg-lang%2Ferg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferg-lang%2Ferg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1999f1119da1816782ed438d30af44f7c49061e3
[INFO] checking erg-lang/erg 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%2Ferg-lang%2Ferg" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/erg-lang/erg
[INFO] finished tweaking git repo https://github.com/erg-lang/erg
[INFO] tweaked toml for git repo https://github.com/erg-lang/erg written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/erg-lang/erg 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/erg-lang/erg 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7f83f63bad0984c4cb626bf333cf45808c851b12678dbdac5dd29501fdbf51bf
[INFO] running `Command { std: "docker" "start" "-a" "7f83f63bad0984c4cb626bf333cf45808c851b12678dbdac5dd29501fdbf51bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f83f63bad0984c4cb626bf333cf45808c851b12678dbdac5dd29501fdbf51bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f83f63bad0984c4cb626bf333cf45808c851b12678dbdac5dd29501fdbf51bf", kill_on_drop: false }`
[INFO] [stdout] 7f83f63bad0984c4cb626bf333cf45808c851b12678dbdac5dd29501fdbf51bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bde4b4429b3b645531da15868637c2a04d8a9bab7e1597d2159b56734220f417
[INFO] running `Command { std: "docker" "start" "-a" "bde4b4429b3b645531da15868637c2a04d8a9bab7e1597d2159b56734220f417", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling erg_common v0.6.53 (/opt/rustwide/workdir/crates/erg_common)
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking erg_proc_macros v0.6.53 (/opt/rustwide/workdir/crates/erg_proc_macros)
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde_repr v0.1.20
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> crates/erg_common/config.rs:414:38
[INFO] [stdout]     |
[INFO] [stdout] 414 |                       let py_command = args
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 415 | |                         .next()
[INFO] [stdout] 416 | |                         .expect("the value of `--py-command` is not passed")
[INFO] [stdout] 417 | |                         .parse::<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<PathBuf, Infallible>
[INFO] [stdout]    --> crates/erg_common/config.rs:542:36
[INFO] [stdout]     |
[INFO] [stdout] 542 |                         let path = PathBuf::from_str(&arg[..])
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> crates/erg_common/config.rs:414:38
[INFO] [stdout]     |
[INFO] [stdout] 414 |                       let py_command = args
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 415 | |                         .next()
[INFO] [stdout] 416 | |                         .expect("the value of `--py-command` is not passed")
[INFO] [stdout] 417 | |                         .parse::<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<PathBuf, Infallible>
[INFO] [stdout]    --> crates/erg_common/config.rs:542:36
[INFO] [stdout]     |
[INFO] [stdout] 542 |                         let path = PathBuf::from_str(&arg[..])
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `erg_common` (lib test) due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> crates/erg_common/config.rs:414:38
[INFO] [stdout]     |
[INFO] [stdout] 414 |                       let py_command = args
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 415 | |                         .next()
[INFO] [stdout] 416 | |                         .expect("the value of `--py-command` is not passed")
[INFO] [stdout] 417 | |                         .parse::<String>()
[INFO] [stdout]     | |__________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> crates/erg_common/config.rs:542:36
[INFO] [stdout]     |
[INFO] [stdout] 542 |                         let path = PathBuf::from_str(&arg[..])
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `erg_common` (lib) due to 2 previous errors
[INFO] [stderr] error: could not compile `erg_common` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bde4b4429b3b645531da15868637c2a04d8a9bab7e1597d2159b56734220f417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bde4b4429b3b645531da15868637c2a04d8a9bab7e1597d2159b56734220f417", kill_on_drop: false }`
[INFO] [stdout] bde4b4429b3b645531da15868637c2a04d8a9bab7e1597d2159b56734220f417
