[INFO] fetching crate decent-toml-rs-alternative 0.3.0...
[INFO] checking decent-toml-rs-alternative-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate decent-toml-rs-alternative 0.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate decent-toml-rs-alternative 0.3.0
[INFO] finished tweaking crates.io crate decent-toml-rs-alternative 0.3.0
[INFO] tweaked toml for crates.io crate decent-toml-rs-alternative 0.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate decent-toml-rs-alternative 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a9c8e127e245ae5b12f14dae57fbf8f0063fd503e7d60b4b0ac2bb6930704caa
[INFO] running `Command { std: "docker" "start" "-a" "a9c8e127e245ae5b12f14dae57fbf8f0063fd503e7d60b4b0ac2bb6930704caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9c8e127e245ae5b12f14dae57fbf8f0063fd503e7d60b4b0ac2bb6930704caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c8e127e245ae5b12f14dae57fbf8f0063fd503e7d60b4b0ac2bb6930704caa", kill_on_drop: false }`
[INFO] [stdout] a9c8e127e245ae5b12f14dae57fbf8f0063fd503e7d60b4b0ac2bb6930704caa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f4d02888b599946ec97844715a66f624e5b143376546ead177027e56b67493c1
[INFO] running `Command { std: "docker" "start" "-a" "f4d02888b599946ec97844715a66f624e5b143376546ead177027e56b67493c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling decent-synquote-alternative v0.3.0
[INFO] [stderr]    Compiling decent-serde-toml-derive-alternative v0.3.0
[INFO] [stderr]     Checking decent-toml-rs-alternative v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]    --> src/parser.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | struct Table<'a> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]   --> src/from.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |                         <$x>::try_from(*x).ok()
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 | impl_from_toml_integer!(i64);
[INFO] [stdout]    | ---------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `impl_from_toml_integer` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `decent-toml-rs-alternative` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]    --> src/parser.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | struct Table<'a> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]   --> src/from.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |                         <$x>::try_from(*x).ok()
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 | impl_from_toml_integer!(i64);
[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 `impl_from_toml_integer` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `decent-toml-rs-alternative` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f4d02888b599946ec97844715a66f624e5b143376546ead177027e56b67493c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4d02888b599946ec97844715a66f624e5b143376546ead177027e56b67493c1", kill_on_drop: false }`
[INFO] [stdout] f4d02888b599946ec97844715a66f624e5b143376546ead177027e56b67493c1