[INFO] fetching crate rusty-leveldb 3.0.2...
[INFO] checking rusty-leveldb-3.0.2 against master#dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 for pr-133502-4
[INFO] extracting crate rusty-leveldb 3.0.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate rusty-leveldb 3.0.2 on toolchain dc8fe1f81c6cf13c0987944c525b2aa81625b5d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusty-leveldb 3.0.2
[INFO] finished tweaking crates.io crate rusty-leveldb 3.0.2
[INFO] tweaked toml for crates.io crate rusty-leveldb 3.0.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 103 packages to latest compatible versions
[INFO] [stderr]       Adding errno v0.2.8 (available: v0.3.11)
[INFO] [stderr]       Adding integer-encoding v3.0.4 (available: v4.0.2)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc v3.2.1
[INFO] [stderr]   Downloaded crc-catalog v2.4.0
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded kv-log-macro v1.0.7
[INFO] [stderr]   Downloaded gloo-timers v0.3.0
[INFO] [stderr]   Downloaded time-test v0.3.0
[INFO] [stderr]   Downloaded errno-dragonfly v0.1.2
[INFO] [stderr]   Downloaded errno v0.2.8
[INFO] [stderr]   Downloaded async-channel v2.3.1
[INFO] [stderr]   Downloaded async-executor v1.13.1
[INFO] [stderr]   Downloaded async-task v4.7.1
[INFO] [stderr]   Downloaded async-global-executor v2.4.1
[INFO] [stderr]   Downloaded piper v0.2.4
[INFO] [stderr]   Downloaded blocking v1.6.1
[INFO] [stderr]   Downloaded value-bag v1.11.1
[INFO] [stderr]   Downloaded async-std v1.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa7125675a5b228ad7011303b642eb921a7fc392b68fd621100417602122b3e6
[INFO] running `Command { std: "docker" "start" "-a" "aa7125675a5b228ad7011303b642eb921a7fc392b68fd621100417602122b3e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa7125675a5b228ad7011303b642eb921a7fc392b68fd621100417602122b3e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa7125675a5b228ad7011303b642eb921a7fc392b68fd621100417602122b3e6", kill_on_drop: false }`
[INFO] [stdout] aa7125675a5b228ad7011303b642eb921a7fc392b68fd621100417602122b3e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dda2d9c252f3d8f1ea1d2f6f77a706770435de6c9955dafac39e1207ce1133df
[INFO] running `Command { std: "docker" "start" "-a" "dda2d9c252f3d8f1ea1d2f6f77a706770435de6c9955dafac39e1207ce1133df", kill_on_drop: false }`
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking time-core v0.1.4
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking integer-encoding v3.0.4
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking crc v3.2.1
[INFO] [stderr]     Checking deranged v0.4.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking time v0.3.41
[INFO] [stderr]     Checking rusty-leveldb v3.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking time-test v0.3.0
[INFO] [stdout] warning: unused import: `crate::block::Block`
[INFO] [stdout]  --> src/db_impl.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::block::Block;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/disk_env.rs:164:18
[INFO] [stdout]     |
[INFO] [stdout] 164 |             if f.unlock().is_err() {
[INFO] [stdout]     |                  ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `unlock(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::unlock`
[INFO] [stdout]    --> src/lib.rs:26:1
[INFO] [stdout]     |
[INFO] [stdout] 26  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::block::Block`
[INFO] [stdout]  --> src/db_impl.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::block::Block;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/disk_env.rs:164:18
[INFO] [stdout]     |
[INFO] [stdout] 164 |             if f.unlock().is_err() {
[INFO] [stdout]     |                  ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `unlock(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::unlock`
[INFO] [stdout]    --> src/lib.rs:26:1
[INFO] [stdout]     |
[INFO] [stdout] 26  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.90s
[INFO] running `Command { std: "docker" "inspect" "dda2d9c252f3d8f1ea1d2f6f77a706770435de6c9955dafac39e1207ce1133df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dda2d9c252f3d8f1ea1d2f6f77a706770435de6c9955dafac39e1207ce1133df", kill_on_drop: false }`
[INFO] [stdout] dda2d9c252f3d8f1ea1d2f6f77a706770435de6c9955dafac39e1207ce1133df