[INFO] fetching crate debridge-u256 1.0.1...
[INFO] checking debridge-u256-1.0.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate debridge-u256 1.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate debridge-u256 1.0.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate debridge-u256 1.0.1
[INFO] finished tweaking crates.io crate debridge-u256 1.0.1
[INFO] tweaked toml for crates.io crate debridge-u256 1.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 88 packages
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
[INFO] [stderr]       Adding bitvec v0.17.4 (latest: v1.0.1)
[INFO] [stderr]       Adding borsh v0.10.3 (latest: v1.4.0)
[INFO] [stderr]       Adding borsh-derive v0.10.3 (latest: v1.4.0)
[INFO] [stderr]       Adding byte-slice-cast v0.3.5 (latest: v1.2.2)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding hashbrown v0.13.2 (latest: v0.14.3)
[INFO] [stderr]       Adding itertools v0.9.0 (latest: v0.12.1)
[INFO] [stderr]       Adding parity-scale-codec v1.3.7 (latest: v3.6.9)
[INFO] [stderr]       Adding proc-macro-crate v0.1.5 (latest: v3.1.0)
[INFO] [stderr]       Adding radium v0.3.0 (latest: v1.1.0)
[INFO] [stderr]       Adding rand v0.7.3 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding serde_derive_internals v0.26.0 (latest: v0.29.0)
[INFO] [stderr]       Adding simplelog v0.11.2 (latest: v0.12.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding termcolor v1.1.3 (latest: v1.4.1)
[INFO] [stderr]       Adding toml v0.5.11 (latest: v0.8.12)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zkp-u256 v0.2.1
[INFO] [stderr]   Downloaded simplelog v0.11.2
[INFO] [stderr]   Downloaded parity-scale-codec v1.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef6ece1339e62529c692e046a777ddaa803e05767f26ce58f501b5cf48013759
[INFO] running `Command { std: "docker" "start" "-a" "ef6ece1339e62529c692e046a777ddaa803e05767f26ce58f501b5cf48013759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef6ece1339e62529c692e046a777ddaa803e05767f26ce58f501b5cf48013759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef6ece1339e62529c692e046a777ddaa803e05767f26ce58f501b5cf48013759", kill_on_drop: false }`
[INFO] [stdout] ef6ece1339e62529c692e046a777ddaa803e05767f26ce58f501b5cf48013759
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd60e2ee7fb197a54e40199bcedb7e5026e35077839f0f97da5e5159b857a806
[INFO] running `Command { std: "docker" "start" "-a" "fd60e2ee7fb197a54e40199bcedb7e5026e35077839f0f97da5e5159b857a806", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]    Compiling schemars v0.8.16
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking dyn-clone v1.0.17
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking simplelog v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling borsh-derive-internal v0.10.3
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.10.3
[INFO] [stderr]    Compiling serde_derive_internals v0.26.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling borsh-derive v0.10.3
[INFO] [stderr]    Compiling schemars_derive v0.8.16
[INFO] [stderr]     Checking borsh v0.10.3
[INFO] [stderr]     Checking parity-scale-codec v1.3.7
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking zkp-u256 v0.2.1
[INFO] [stderr]     Checking debridge-u256 v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | use std::convert::TryFrom;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `TryFrom` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | use std::convert::TryFrom;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `TryFrom` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.39s
[INFO] running `Command { std: "docker" "inspect" "fd60e2ee7fb197a54e40199bcedb7e5026e35077839f0f97da5e5159b857a806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd60e2ee7fb197a54e40199bcedb7e5026e35077839f0f97da5e5159b857a806", kill_on_drop: false }`
[INFO] [stdout] fd60e2ee7fb197a54e40199bcedb7e5026e35077839f0f97da5e5159b857a806
[INFO] checking debridge-u256-1.0.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate debridge-u256 1.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate debridge-u256 1.0.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate debridge-u256 1.0.1
[INFO] finished tweaking crates.io crate debridge-u256 1.0.1
[INFO] tweaked toml for crates.io crate debridge-u256 1.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dfe11cc8f1a41f291ef767ccc97f797eb869a7113ae75a4d10b8fe5b20cbaa5
[INFO] running `Command { std: "docker" "start" "-a" "6dfe11cc8f1a41f291ef767ccc97f797eb869a7113ae75a4d10b8fe5b20cbaa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dfe11cc8f1a41f291ef767ccc97f797eb869a7113ae75a4d10b8fe5b20cbaa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfe11cc8f1a41f291ef767ccc97f797eb869a7113ae75a4d10b8fe5b20cbaa5", kill_on_drop: false }`
[INFO] [stdout] 6dfe11cc8f1a41f291ef767ccc97f797eb869a7113ae75a4d10b8fe5b20cbaa5
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d74b4783b47a300ac68aad08f9cfd3710ceec283ea554a8c1a1efddf1b3f927d
[INFO] running `Command { std: "docker" "start" "-a" "d74b4783b47a300ac68aad08f9cfd3710ceec283ea554a8c1a1efddf1b3f927d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling schemars v0.8.16
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking dyn-clone v1.0.17
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking simplelog v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.10.3
[INFO] [stderr]    Compiling serde_derive_internals v0.26.0
[INFO] [stderr]    Compiling borsh-derive-internal v0.10.3
[INFO] [stderr]    Compiling schemars_derive v0.8.16
[INFO] [stderr]    Compiling borsh-derive v0.10.3
[INFO] [stderr]     Checking borsh v0.10.3
[INFO] [stderr]     Checking parity-scale-codec v1.3.7
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking zkp-u256 v0.2.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/zkp-u256-0.2.1/src/multiplicative.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |             panic!(); // TODO: return Option<>
[INFO] [stdout]     |             ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zkp-u256` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d74b4783b47a300ac68aad08f9cfd3710ceec283ea554a8c1a1efddf1b3f927d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d74b4783b47a300ac68aad08f9cfd3710ceec283ea554a8c1a1efddf1b3f927d", kill_on_drop: false }`
[INFO] [stdout] d74b4783b47a300ac68aad08f9cfd3710ceec283ea554a8c1a1efddf1b3f927d