[INFO] fetching crate informalsystems-ics23 0.9.0-alpha...
[INFO] checking informalsystems-ics23-0.9.0-alpha against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate informalsystems-ics23 0.9.0-alpha into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate informalsystems-ics23 0.9.0-alpha 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] removed /workspace/builds/worker-7-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate informalsystems-ics23 0.9.0-alpha
[INFO] finished tweaking crates.io crate informalsystems-ics23 0.9.0-alpha
[INFO] tweaked toml for crates.io crate informalsystems-ics23 0.9.0-alpha 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 33 packages
[INFO] [stderr]       Adding block-buffer v0.9.0 (latest: v0.10.4)
[INFO] [stderr]       Adding block-padding v0.2.1 (latest: v0.3.3)
[INFO] [stderr]       Adding digest v0.9.0 (latest: v0.10.7)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding prost v0.11.9 (latest: v0.12.3)
[INFO] [stderr]       Adding prost-derive v0.11.9 (latest: v0.12.3)
[INFO] [stderr]       Adding ripemd160 v0.9.1 (latest: v0.10.0)
[INFO] [stderr]       Adding sha2 v0.9.9 (latest: v0.10.8)
[INFO] [stderr]       Adding sha3 v0.9.1 (latest: v0.10.8)
[INFO] [stderr]       Adding sp-std v3.0.0 (latest: v14.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sp-std v3.0.0
[INFO] [stderr]   Downloaded ripemd160 v0.9.1
[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] e2f93d1bb76608819087d5193855022461a71fe93dedd6d70d018e359e2609c2
[INFO] running `Command { std: "docker" "start" "-a" "e2f93d1bb76608819087d5193855022461a71fe93dedd6d70d018e359e2609c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2f93d1bb76608819087d5193855022461a71fe93dedd6d70d018e359e2609c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f93d1bb76608819087d5193855022461a71fe93dedd6d70d018e359e2609c2", kill_on_drop: false }`
[INFO] [stdout] e2f93d1bb76608819087d5193855022461a71fe93dedd6d70d018e359e2609c2
[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] 75e85bffd9dd73d26f183361fab42aff7cd8e5c02f032557533f319cf99036b5
[INFO] running `Command { std: "docker" "start" "-a" "75e85bffd9dd73d26f183361fab42aff7cd8e5c02f032557533f319cf99036b5", kill_on_drop: false }`
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling prost-derive v0.11.9
[INFO] [stderr]     Checking sp-std v3.0.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking ripemd160 v0.9.1
[INFO] [stderr]     Checking prost v0.11.9
[INFO] [stderr]     Checking informalsystems-ics23 v0.9.0-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToOwned` is imported redundantly
[INFO] [stdout]  --> src/compress.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::ToOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToOwned` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/compress.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/verify.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]    --> src/api.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     use alloc::string::String;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `String` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]    --> src/api.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |     use std::vec::Vec;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToOwned` is imported redundantly
[INFO] [stdout]  --> src/compress.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::ToOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToOwned` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/compress.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]   --> src/ops.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     use std::vec::Vec;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/verify.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.18s
[INFO] running `Command { std: "docker" "inspect" "75e85bffd9dd73d26f183361fab42aff7cd8e5c02f032557533f319cf99036b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75e85bffd9dd73d26f183361fab42aff7cd8e5c02f032557533f319cf99036b5", kill_on_drop: false }`
[INFO] [stdout] 75e85bffd9dd73d26f183361fab42aff7cd8e5c02f032557533f319cf99036b5