[INFO] fetching crate merkle-tree-accumulator 0.2.0...
[INFO] checking merkle-tree-accumulator-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate merkle-tree-accumulator 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate merkle-tree-accumulator 0.2.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle-tree-accumulator 0.2.0
[INFO] finished tweaking crates.io crate merkle-tree-accumulator 0.2.0
[INFO] tweaked toml for crates.io crate merkle-tree-accumulator 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 79 packages
[INFO] [stderr]       Adding ahash v0.4.8 (latest: v0.8.11)
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[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 borsh v0.8.2 (latest: v1.4.0)
[INFO] [stderr]       Adding borsh-derive v0.8.2 (latest: v1.4.0)
[INFO] [stderr]       Adding borsh-derive-internal v0.8.2 (latest: v0.10.3)
[INFO] [stderr]       Adding borsh-schema-derive-internal v0.8.2 (latest: v0.10.3)
[INFO] [stderr]       Adding bs58 v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding convert_case v0.4.0 (latest: v0.6.0)
[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 hashbrown v0.9.1 (latest: v0.14.3)
[INFO] [stderr]       Adding near-primitives-core v0.4.0 (latest: v0.21.2)
[INFO] [stderr]       Adding near-rpc-error-core v0.1.0 (latest: v0.21.2)
[INFO] [stderr]       Adding near-rpc-error-macro v0.1.0 (latest: v0.21.2)
[INFO] [stderr]       Adding near-sdk v3.1.0 (latest: v5.1.0)
[INFO] [stderr]       Adding near-sdk-macros v3.1.0 (latest: v5.1.0)
[INFO] [stderr]       Adding num-bigint v0.3.3 (latest: v0.4.4)
[INFO] [stderr]       Adding num-rational v0.3.2 (latest: v0.4.1)
[INFO] [stderr]       Adding proc-macro-crate v0.1.5 (latest: v3.1.0)
[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 syn v1.0.57 (latest: v2.0.58)
[INFO] [stderr]       Adding toml v0.5.11 (latest: v0.8.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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 near-rpc-error-core v0.1.0
[INFO] [stderr]   Downloaded borsh v0.8.2
[INFO] [stderr]   Downloaded near-sdk-macros v3.1.0
[INFO] [stderr]   Downloaded borsh-schema-derive-internal v0.8.2
[INFO] [stderr]   Downloaded near-runtime-utils v4.0.0-pre.1
[INFO] [stderr]   Downloaded borsh-derive-internal v0.8.2
[INFO] [stderr]   Downloaded near-rpc-error-macro v0.1.0
[INFO] [stderr]   Downloaded near-sdk-core v3.1.0
[INFO] [stderr]   Downloaded near-vm-logic v4.0.0-pre.1
[INFO] [stderr]   Downloaded num-bigint v0.3.3
[INFO] [stderr]   Downloaded near-primitives-core v0.4.0
[INFO] [stderr]   Downloaded borsh-derive v0.8.2
[INFO] [stderr]   Downloaded ahash v0.4.8
[INFO] [stderr]   Downloaded syn v1.0.57
[INFO] [stderr]   Downloaded near-sdk v3.1.0
[INFO] [stderr]   Downloaded safe-transmute v0.11.2
[INFO] [stderr]   Downloaded near-vm-errors v4.0.0-pre.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b252b22c6cea7c104b91d957934dc34bd90caf7d677d877e449e347c10eb179f
[INFO] running `Command { std: "docker" "start" "-a" "b252b22c6cea7c104b91d957934dc34bd90caf7d677d877e449e347c10eb179f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b252b22c6cea7c104b91d957934dc34bd90caf7d677d877e449e347c10eb179f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b252b22c6cea7c104b91d957934dc34bd90caf7d677d877e449e347c10eb179f", kill_on_drop: false }`
[INFO] [stdout] b252b22c6cea7c104b91d957934dc34bd90caf7d677d877e449e347c10eb179f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c1a3f8f5aff9c4e6e0d5023836ec6e6c1261ea823e5d407655fa39cb06a45f4
[INFO] running `Command { std: "docker" "start" "-a" "6c1a3f8f5aff9c4e6e0d5023836ec6e6c1261ea823e5d407655fa39cb06a45f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking opaque-debug v0.3.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking bs58 v0.4.0
[INFO] [stderr]     Checking near-runtime-utils v4.0.0-pre.1
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking safe-transmute v0.11.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling borsh-derive-internal v0.8.2
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.8.2
[INFO] [stderr]    Compiling near-sdk-core v3.1.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling near-sdk-macros v3.1.0
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling near-rpc-error-core v0.1.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling near-rpc-error-macro v0.1.0
[INFO] [stderr]    Compiling borsh-derive v0.8.2
[INFO] [stderr]     Checking borsh v0.8.2
[INFO] [stderr]     Checking near-vm-errors v4.0.0-pre.1
[INFO] [stderr]     Checking near-primitives-core v0.4.0
[INFO] [stderr]     Checking near-vm-logic v4.0.0-pre.1
[INFO] [stderr]     Checking near-sdk v3.1.0
[INFO] [stderr]     Checking merkle-tree-accumulator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rlp` is imported redundantly
[INFO] [stdout]  --> src/hash.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, encode_list};
[INFO] [stdout]   |           ^^^^ the item `rlp` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rlp` is imported redundantly
[INFO] [stdout]  --> src/hash.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, encode_list};
[INFO] [stdout]   |           ^^^^ the item `rlp` is already defined by prelude
[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 19.76s
[INFO] running `Command { std: "docker" "inspect" "6c1a3f8f5aff9c4e6e0d5023836ec6e6c1261ea823e5d407655fa39cb06a45f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1a3f8f5aff9c4e6e0d5023836ec6e6c1261ea823e5d407655fa39cb06a45f4", kill_on_drop: false }`
[INFO] [stdout] 6c1a3f8f5aff9c4e6e0d5023836ec6e6c1261ea823e5d407655fa39cb06a45f4