[INFO] fetching crate undis 0.1.0...
[INFO] checking undis-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate undis 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate undis 0.1.0
[INFO] finished tweaking crates.io crate undis 0.1.0
[INFO] tweaked toml for crates.io crate undis 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate undis 0.1.0 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 undis 0.1.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3d2432a745d4ea13447c0385f01b63be6c0ceb6d2170f0ddbd4400c920d5db33
[INFO] running `Command { std: "docker" "start" "-a" "3d2432a745d4ea13447c0385f01b63be6c0ceb6d2170f0ddbd4400c920d5db33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d2432a745d4ea13447c0385f01b63be6c0ceb6d2170f0ddbd4400c920d5db33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d2432a745d4ea13447c0385f01b63be6c0ceb6d2170f0ddbd4400c920d5db33", kill_on_drop: false }`
[INFO] [stdout] 3d2432a745d4ea13447c0385f01b63be6c0ceb6d2170f0ddbd4400c920d5db33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fd3d47b247441bd6e8904fa2b1c2763ebddff6a0b9cbef92fbed452fd957f637
[INFO] running `Command { std: "docker" "start" "-a" "fd3d47b247441bd6e8904fa2b1c2763ebddff6a0b9cbef92fbed452fd957f637", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.75
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking undis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/resp3/de.rs:192:59
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 Kind::Num(num) => visitor.[<visit_ $int>](num.try_into().map_err(|_| Error::IntegerOverflow)?),
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     deserialize_small_int!(i8 i16 i32 i64 u8 u16 u32);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `deserialize_small_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/resp3/de.rs:208:59
[INFO] [stdout]     |
[INFO] [stdout] 208 |                 Kind::Num(num) => visitor.[<visit_ $int>](num.try_into().map_err(|_| Error::IntegerOverflow)?),
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 282 |     deserialize_large_int!(i128 u64 u128);
[INFO] [stdout]     |     ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `deserialize_large_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `undis` (lib) due to 2 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<i64, Infallible>
[INFO] [stdout]    --> src/resp3/de.rs:192:59
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 Kind::Num(num) => visitor.[<visit_ $int>](num.try_into().map_err(|_| Error::IntegerOverflow)?),
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     deserialize_small_int!(i8 i16 i32 i64 u8 u16 u32);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `deserialize_small_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/resp3/de.rs:208:59
[INFO] [stdout]     |
[INFO] [stdout] 208 |                 Kind::Num(num) => visitor.[<visit_ $int>](num.try_into().map_err(|_| Error::IntegerOverflow)?),
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 282 |     deserialize_large_int!(i128 u64 u128);
[INFO] [stdout]     |     ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `deserialize_large_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `undis` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fd3d47b247441bd6e8904fa2b1c2763ebddff6a0b9cbef92fbed452fd957f637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3d47b247441bd6e8904fa2b1c2763ebddff6a0b9cbef92fbed452fd957f637", kill_on_drop: false }`
[INFO] [stdout] fd3d47b247441bd6e8904fa2b1c2763ebddff6a0b9cbef92fbed452fd957f637