[INFO] fetching crate dvcdbg 0.3.0...
[INFO] checking dvcdbg-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate dvcdbg 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate dvcdbg 0.3.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dvcdbg 0.3.0
[INFO] tweaked toml for crates.io crate dvcdbg 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dvcdbg 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 dvcdbg 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] 4ba2e36edad9dca762101e10421e84b488b6fadb5c3975cd09f6edfa791ac7c8
[INFO] running `Command { std: "docker" "start" "-a" "4ba2e36edad9dca762101e10421e84b488b6fadb5c3975cd09f6edfa791ac7c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ba2e36edad9dca762101e10421e84b488b6fadb5c3975cd09f6edfa791ac7c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba2e36edad9dca762101e10421e84b488b6fadb5c3975cd09f6edfa791ac7c8", kill_on_drop: false }`
[INFO] [stdout] 4ba2e36edad9dca762101e10421e84b488b6fadb5c3975cd09f6edfa791ac7c8
[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] 0fe7ae3e50bb013b39f3d235321d1da3e2b849fc0da8792b63e66666283ddee0
[INFO] running `Command { std: "docker" "start" "-a" "0fe7ae3e50bb013b39f3d235321d1da3e2b849fc0da8792b63e66666283ddee0", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.9.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking embedded-io v0.6.1
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]     Checking dvcdbg v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/compat/serial_compat.rs:103:75
[INFO] [stdout]     |
[INFO] [stdout] 103 |               fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  ___________________________________________________________________________^
[INFO] [stdout] 104 | |                 Ok(buf.len())
[INFO] [stdout] 105 | |             }
[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<usize, Infallible>
[INFO] [stdout]    --> src/compat/serial_compat.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 Ok(buf.len())
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dvcdbg` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0fe7ae3e50bb013b39f3d235321d1da3e2b849fc0da8792b63e66666283ddee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fe7ae3e50bb013b39f3d235321d1da3e2b849fc0da8792b63e66666283ddee0", kill_on_drop: false }`
[INFO] [stdout] 0fe7ae3e50bb013b39f3d235321d1da3e2b849fc0da8792b63e66666283ddee0
