[INFO] fetching crate byt32 0.1.7...
[INFO] checking byt32-0.1.7 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate byt32 0.1.7 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate byt32 0.1.7
[INFO] finished tweaking crates.io crate byt32 0.1.7
[INFO] tweaked toml for crates.io crate byt32 0.1.7 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate byt32 0.1.7 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 byt32 0.1.7 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c98d86e97d9f46b32cfb0a21f24b2cd39b2ba46833d577de9cedda5f432cf96d
[INFO] running `Command { std: "docker" "start" "-a" "c98d86e97d9f46b32cfb0a21f24b2cd39b2ba46833d577de9cedda5f432cf96d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c98d86e97d9f46b32cfb0a21f24b2cd39b2ba46833d577de9cedda5f432cf96d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c98d86e97d9f46b32cfb0a21f24b2cd39b2ba46833d577de9cedda5f432cf96d", kill_on_drop: false }`
[INFO] [stdout] c98d86e97d9f46b32cfb0a21f24b2cd39b2ba46833d577de9cedda5f432cf96d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 417b89a11cc35787da27b32e1fe672c89518628d310273fa157a0e0eb45afb94
[INFO] running `Command { std: "docker" "start" "-a" "417b89a11cc35787da27b32e1fe672c89518628d310273fa157a0e0eb45afb94", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking ibig v0.3.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling ctor v0.1.22
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]     Checking minstant v0.1.1
[INFO] [stderr]     Checking aoko v0.3.0-alpha.7
[INFO] [stderr]     Checking clap v3.1.8
[INFO] [stderr]     Checking byt32 v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | /         #[clap()]
[INFO] [stdout] 24 | |         int: 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/cli.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | /         #[clap()]
[INFO] [stdout] 31 | |         str: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         #[clap()]
[INFO] [stdout] 38 | |         hex: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 | /         #[clap()]
[INFO] [stdout] 45 | |         hex: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | /         #[clap()]
[INFO] [stdout] 24 | |         int: 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/cli.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | /         #[clap()]
[INFO] [stdout] 31 | |         str: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         #[clap()]
[INFO] [stdout] 38 | |         hex: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 | /         #[clap()]
[INFO] [stdout] 45 | |         hex: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `byt32` (lib test) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `byt32` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "417b89a11cc35787da27b32e1fe672c89518628d310273fa157a0e0eb45afb94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "417b89a11cc35787da27b32e1fe672c89518628d310273fa157a0e0eb45afb94", kill_on_drop: false }`
[INFO] [stdout] 417b89a11cc35787da27b32e1fe672c89518628d310273fa157a0e0eb45afb94