[INFO] cloning repository https://github.com/MakotoMiyamoto/mcclient
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MakotoMiyamoto/mcclient" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMakotoMiyamoto%2Fmcclient", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMakotoMiyamoto%2Fmcclient'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e51a91b1ff19141d9a3f306d9640b17c5fb6d63
[INFO] checking MakotoMiyamoto/mcclient 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%2FMakotoMiyamoto%2Fmcclient" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MakotoMiyamoto/mcclient
[INFO] finished tweaking git repo https://github.com/MakotoMiyamoto/mcclient
[INFO] tweaked toml for git repo https://github.com/MakotoMiyamoto/mcclient written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MakotoMiyamoto/mcclient 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/MakotoMiyamoto/mcclient 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] d3363cc08f7d0adf7b0ab19856ea491e02c20f069fb5d48386d9243d73bd29bc
[INFO] running `Command { std: "docker" "start" "-a" "d3363cc08f7d0adf7b0ab19856ea491e02c20f069fb5d48386d9243d73bd29bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3363cc08f7d0adf7b0ab19856ea491e02c20f069fb5d48386d9243d73bd29bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3363cc08f7d0adf7b0ab19856ea491e02c20f069fb5d48386d9243d73bd29bc", kill_on_drop: false }`
[INFO] [stdout] d3363cc08f7d0adf7b0ab19856ea491e02c20f069fb5d48386d9243d73bd29bc
[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] a0bce64ca62c96b49a5cc9ddcbd56f158129fbcd7be27a6e863d3aad30882b5c
[INFO] running `Command { std: "docker" "start" "-a" "a0bce64ca62c96b49a5cc9ddcbd56f158129fbcd7be27a6e863d3aad30882b5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling serde_json v1.0.97
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking uuid v1.3.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking mcclient v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/mc/stream.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let len = TryInto::<i32>::try_into(VarInt::from_bytes(&received)?).unwrap() as usize;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcclient` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/mc/stream.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let len = TryInto::<i32>::try_into(VarInt::from_bytes(&received)?).unwrap() as usize;
[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, Infallible>
[INFO] [stdout]   --> src/tests.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 |         assert_eq!(0, TryInto::<i32>::try_into(VarInt::from(&[0][..])).unwrap());
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |         assert_eq!(1, TryInto::<i32>::try_into(VarInt::from(&[1][..])).unwrap());
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |         assert_eq!(2, TryInto::<i32>::try_into(VarInt::from(&[2][..])).unwrap());
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |         assert_eq!(127, TryInto::<i32>::try_into(VarInt::from(&[127][..])).unwrap());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:35:25
[INFO] [stdout]    |
[INFO] [stdout] 35 |         assert_eq!(128, TryInto::<i32>::try_into(VarInt::from(&[128, 1][..])).unwrap());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 36 |         assert_eq!(255, TryInto::<i32>::try_into(VarInt::from(&[255, 1][..])).unwrap());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |         assert_eq!(25565, TryInto::<i32>::try_into(VarInt::from(&[221, 199, 1][..])).unwrap());
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:38:29
[INFO] [stdout]    |
[INFO] [stdout] 38 |         assert_eq!(2097151, TryInto::<i32>::try_into(VarInt::from(&[255, 255, 127][..])).unwrap());
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |             TryInto::<i32>::try_into(VarInt::from(&[255, 255, 255, 255, 7][..])).unwrap()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |         assert_eq!(-1, TryInto::<i32>::try_into(VarInt::from(&[255, 255, 255, 255, 15][..])).unwrap());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/tests.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             TryInto::<i32>::try_into(VarInt::from(&[128, 128, 128, 128, 8][..])).unwrap()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcclient` (lib test) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "a0bce64ca62c96b49a5cc9ddcbd56f158129fbcd7be27a6e863d3aad30882b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0bce64ca62c96b49a5cc9ddcbd56f158129fbcd7be27a6e863d3aad30882b5c", kill_on_drop: false }`
[INFO] [stdout] a0bce64ca62c96b49a5cc9ddcbd56f158129fbcd7be27a6e863d3aad30882b5c