[INFO] fetching crate tensorism-gen 0.1.2...
[INFO] checking tensorism-gen-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate tensorism-gen 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate tensorism-gen 0.1.2
[INFO] finished tweaking crates.io crate tensorism-gen 0.1.2
[INFO] tweaked toml for crates.io crate tensorism-gen 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tensorism-gen 0.1.2 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 6 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.110)
[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] 98ab98e061e138a90b9944a90e7366d69088261d4c1f2ba6b7631eb65eab4cf9
[INFO] running `Command { std: "docker" "start" "-a" "98ab98e061e138a90b9944a90e7366d69088261d4c1f2ba6b7631eb65eab4cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98ab98e061e138a90b9944a90e7366d69088261d4c1f2ba6b7631eb65eab4cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ab98e061e138a90b9944a90e7366d69088261d4c1f2ba6b7631eb65eab4cf9", kill_on_drop: false }`
[INFO] [stdout] 98ab98e061e138a90b9944a90e7366d69088261d4c1f2ba6b7631eb65eab4cf9
[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] bdfb27d83899a1d865661c873c53f01c2aa8caf1c36b3de6107fbe9b03027187
[INFO] running `Command { std: "docker" "start" "-a" "bdfb27d83899a1d865661c873c53f01c2aa8caf1c36b3de6107fbe9b03027187", kill_on_drop: false }`
[INFO] [stderr]     Checking tensorism v0.1.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tensorism-gen v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tests/make_tests.rs:51:66
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let messages = ["Hello", "World", "How", "are you?"].map(|s| String::from_str(s).unwrap());
[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 `tensorism-gen` (test "make_tests") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "bdfb27d83899a1d865661c873c53f01c2aa8caf1c36b3de6107fbe9b03027187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdfb27d83899a1d865661c873c53f01c2aa8caf1c36b3de6107fbe9b03027187", kill_on_drop: false }`
[INFO] [stdout] bdfb27d83899a1d865661c873c53f01c2aa8caf1c36b3de6107fbe9b03027187