[INFO] fetching crate cargo-espmonitor 0.10.0...
[INFO] checking cargo-espmonitor-0.10.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cargo-espmonitor 0.10.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate cargo-espmonitor 0.10.0
[INFO] finished tweaking crates.io crate cargo-espmonitor 0.10.0
[INFO] tweaked toml for crates.io crate cargo-espmonitor 0.10.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-espmonitor 0.10.0 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 cargo-espmonitor 0.10.0 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] 593cf5a7b593fed6507b50a92deea8bc82cb54c0d4ecb9c1fde5b907bdb4c504
[INFO] running `Command { std: "docker" "start" "-a" "593cf5a7b593fed6507b50a92deea8bc82cb54c0d4ecb9c1fde5b907bdb4c504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "593cf5a7b593fed6507b50a92deea8bc82cb54c0d4ecb9c1fde5b907bdb4c504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "593cf5a7b593fed6507b50a92deea8bc82cb54c0d4ecb9c1fde5b907bdb4c504", kill_on_drop: false }`
[INFO] [stdout] 593cf5a7b593fed6507b50a92deea8bc82cb54c0d4ecb9c1fde5b907bdb4c504
[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] 13582c9795bd6583875826decbb352af3403e589e4eb3311c8f008eeb77276d9
[INFO] running `Command { std: "docker" "start" "-a" "13582c9795bd6583875826decbb352af3403e589e4eb3311c8f008eeb77276d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.24.1
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.23.2
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rustc-cfg v0.4.0
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking espmonitor v0.10.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking cargo-project v0.2.7
[INFO] [stderr]     Checking cargo-espmonitor v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | /     /// If flashing, build with these features first
[INFO] [stdout] 69 | |     #[clap(long, requires = "flash")]
[INFO] [stdout] 70 | |     features: Option<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/main.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | /     /// Example app to use
[INFO] [stdout] 85 | |     #[clap(long, conflicts_with = "bin")]
[INFO] [stdout] 86 | |     example: Option<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/main.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | /     /// Bin target to use
[INFO] [stdout] 89 | |     #[clap(long, conflicts_with = "example")]
[INFO] [stdout] 90 | |     bin: Option<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/main.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | /     /// Infer chip and framework from target triple
[INFO] [stdout] 93 | |     #[clap(
[INFO] [stdout] 94 | |         long,
[INFO] [stdout] 95 | |         name = "TARGET_TRIPLE",
[INFO] [stdout] ...  |
[INFO] [stdout] 98 | |     )]
[INFO] [stdout] 99 | |     target: Option<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/main.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     /// Path to the serial device
[INFO] [stdout] 102 | |     #[clap(name = "SERIAL_DEVICE")]
[INFO] [stdout] 103 | |     serial: String,
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-espmonitor` (bin "cargo-espmonitor") due to 5 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, Infallible>
[INFO] [stdout]   --> src/main.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | /     /// If flashing, build with these features first
[INFO] [stdout] 69 | |     #[clap(long, requires = "flash")]
[INFO] [stdout] 70 | |     features: Option<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/main.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | /     /// Example app to use
[INFO] [stdout] 85 | |     #[clap(long, conflicts_with = "bin")]
[INFO] [stdout] 86 | |     example: Option<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/main.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | /     /// Bin target to use
[INFO] [stdout] 89 | |     #[clap(long, conflicts_with = "example")]
[INFO] [stdout] 90 | |     bin: Option<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/main.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | /     /// Infer chip and framework from target triple
[INFO] [stdout] 93 | |     #[clap(
[INFO] [stdout] 94 | |         long,
[INFO] [stdout] 95 | |         name = "TARGET_TRIPLE",
[INFO] [stdout] ...  |
[INFO] [stdout] 98 | |     )]
[INFO] [stdout] 99 | |     target: Option<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/main.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     /// Path to the serial device
[INFO] [stdout] 102 | |     #[clap(name = "SERIAL_DEVICE")]
[INFO] [stdout] 103 | |     serial: String,
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-espmonitor` (bin "cargo-espmonitor" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "13582c9795bd6583875826decbb352af3403e589e4eb3311c8f008eeb77276d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13582c9795bd6583875826decbb352af3403e589e4eb3311c8f008eeb77276d9", kill_on_drop: false }`
[INFO] [stdout] 13582c9795bd6583875826decbb352af3403e589e4eb3311c8f008eeb77276d9
