[INFO] fetching crate mif 0.3.0...
[INFO] checking mif-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mif 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate mif 0.3.0
[INFO] finished tweaking crates.io crate mif 0.3.0
[INFO] tweaked toml for crates.io crate mif 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mif 0.3.0 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 mif 0.3.0 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] 9613e8e792ba73a0c9af92995045fe738674c1641a7bcad61ea3c01b43739181
[INFO] running `Command { std: "docker" "start" "-a" "9613e8e792ba73a0c9af92995045fe738674c1641a7bcad61ea3c01b43739181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9613e8e792ba73a0c9af92995045fe738674c1641a7bcad61ea3c01b43739181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9613e8e792ba73a0c9af92995045fe738674c1641a7bcad61ea3c01b43739181", kill_on_drop: false }`
[INFO] [stdout] 9613e8e792ba73a0c9af92995045fe738674c1641a7bcad61ea3c01b43739181
[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] 8752ce96abef2919353f387b88e0f2635637a997a3eeaee029c22e3596738b1a
[INFO] running `Command { std: "docker" "start" "-a" "8752ce96abef2919353f387b88e0f2635637a997a3eeaee029c22e3596738b1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking os_str_bytes v2.3.2
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking clap v3.0.0-beta.1
[INFO] [stderr]     Checking mif v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mif.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | /         /// Input file or standard input (-).
[INFO] [stdout] 27 | |         #[clap(default_value = "-")]
[INFO] [stdout] 28 | |         input: PathBuf,
[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]   --> src/bin/mif.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 | /         /// TOML file or standard input (-).
[INFO] [stdout] 41 | |         #[clap(default_value = "-")]
[INFO] [stdout] 42 | |         toml: PathBuf,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mif.rs:43:3
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         /// Input directory [default: .].
[INFO] [stdout] 44 | |         #[clap(short = "i", long = "bins", value_name = "path")]
[INFO] [stdout] 45 | |         bins: Option<PathBuf>, // `default_value = ""` broken for non-pos opts.
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mif.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         /// Output directory [default: .].
[INFO] [stdout] 47 | |         #[clap(short = "o", long = "mifs", value_name = "path")]
[INFO] [stdout] 48 | |         mifs: Option<PathBuf>, // `default_value = ""` broken for non-pos opts.
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mif` (bin "mif") 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<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mif.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | /         /// Input file or standard input (-).
[INFO] [stdout] 27 | |         #[clap(default_value = "-")]
[INFO] [stdout] 28 | |         input: PathBuf,
[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]   --> src/bin/mif.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 | /         /// TOML file or standard input (-).
[INFO] [stdout] 41 | |         #[clap(default_value = "-")]
[INFO] [stdout] 42 | |         toml: PathBuf,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mif.rs:43:3
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         /// Input directory [default: .].
[INFO] [stdout] 44 | |         #[clap(short = "i", long = "bins", value_name = "path")]
[INFO] [stdout] 45 | |         bins: Option<PathBuf>, // `default_value = ""` broken for non-pos opts.
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mif.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         /// Output directory [default: .].
[INFO] [stdout] 47 | |         #[clap(short = "o", long = "mifs", value_name = "path")]
[INFO] [stdout] 48 | |         mifs: Option<PathBuf>, // `default_value = ""` broken for non-pos opts.
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mif` (bin "mif" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "8752ce96abef2919353f387b88e0f2635637a997a3eeaee029c22e3596738b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8752ce96abef2919353f387b88e0f2635637a997a3eeaee029c22e3596738b1a", kill_on_drop: false }`
[INFO] [stdout] 8752ce96abef2919353f387b88e0f2635637a997a3eeaee029c22e3596738b1a
