[INFO] fetching crate ufmt 0.2.0...
[INFO] testing ufmt-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate ufmt 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate ufmt 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ufmt 0.2.0
[INFO] tweaked toml for crates.io crate ufmt 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ufmt 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufmt-macros v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dfd22a5db26b7d754ec41025410d9195419dd2af0beb08d6fc340bfd83cbd57
[INFO] running `Command { std: "docker" "start" "-a" "2dfd22a5db26b7d754ec41025410d9195419dd2af0beb08d6fc340bfd83cbd57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dfd22a5db26b7d754ec41025410d9195419dd2af0beb08d6fc340bfd83cbd57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dfd22a5db26b7d754ec41025410d9195419dd2af0beb08d6fc340bfd83cbd57", kill_on_drop: false }`
[INFO] [stdout] 2dfd22a5db26b7d754ec41025410d9195419dd2af0beb08d6fc340bfd83cbd57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e81cc5587a4a4e666797c9c4bb4e2d20fac854f2606ff3186b53f50c26951f9
[INFO] running `Command { std: "docker" "start" "-a" "7e81cc5587a4a4e666797c9c4bb4e2d20fac854f2606ff3186b53f50c26951f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ufmt-macros v0.3.0
[INFO] [stderr]    Compiling ufmt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `Command { std: "docker" "inspect" "7e81cc5587a4a4e666797c9c4bb4e2d20fac854f2606ff3186b53f50c26951f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e81cc5587a4a4e666797c9c4bb4e2d20fac854f2606ff3186b53f50c26951f9", kill_on_drop: false }`
[INFO] [stdout] 7e81cc5587a4a4e666797c9c4bb4e2d20fac854f2606ff3186b53f50c26951f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c4eab4de686bffefe5ca8485fc9aed11a802a2fcfa0792f5a9cc2c645845967
[INFO] running `Command { std: "docker" "start" "-a" "1c4eab4de686bffefe5ca8485fc9aed11a802a2fcfa0792f5a9cc2c645845967", kill_on_drop: false }`
[INFO] [stderr]    Compiling ufmt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `do_as_formatter` exists for struct `String`, but its trait bounds were not satisfied
[INFO] [stdout]   --> tests/gh36.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     uwrite!(s, "{:?}", pair).unwrap();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ method cannot be called on `String` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `String: uWrite`
[INFO] [stdout]            which is required by `String: UnstableDoAsFormatter`
[INFO] [stdout]            `str: uWrite`
[INFO] [stdout]            which is required by `str: UnstableDoAsFormatter`
[INFO] [stdout]    = note: this error originates in the macro `uwrite` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `do_as_formatter` exists for struct `String`, but its trait bounds were not satisfied
[INFO] [stdout]   --> tests/gh36.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     uwriteln!(s, "{:?}", pair).unwrap();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ method cannot be called on `String` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `String: uWrite`
[INFO] [stdout]            which is required by `String: UnstableDoAsFormatter`
[INFO] [stdout]            `str: uWrite`
[INFO] [stdout]            which is required by `str: UnstableDoAsFormatter`
[INFO] [stdout]    = note: this error originates in the macro `uwriteln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ufmt` (test "gh36") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1c4eab4de686bffefe5ca8485fc9aed11a802a2fcfa0792f5a9cc2c645845967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c4eab4de686bffefe5ca8485fc9aed11a802a2fcfa0792f5a9cc2c645845967", kill_on_drop: false }`
[INFO] [stdout] 1c4eab4de686bffefe5ca8485fc9aed11a802a2fcfa0792f5a9cc2c645845967
