[INFO] fetching crate binstore 0.2.0...
[INFO] checking binstore-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate binstore 0.2.0 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate binstore 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate binstore 0.2.0
[INFO] finished tweaking crates.io crate binstore 0.2.0
[INFO] tweaked toml for crates.io crate binstore 0.2.0 written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate crates.io crate binstore 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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 regex-syntax v0.6.6
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] [stderr]   Downloaded regex v1.1.7
[INFO] [stderr]   Downloaded aho-corasick v0.7.3
[INFO] [stderr]   Downloaded utf8-ranges v1.0.3
[INFO] [stderr]   Downloaded textwrap v0.10.0
[INFO] [stderr]   Downloaded bincode v1.1.4
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded wincolor v1.0.1
[INFO] [stderr]   Downloaded clap v2.32.0
[INFO] [stderr]   Downloaded serde v1.0.91
[INFO] [stderr]   Downloaded assert_matches v1.3.0
[INFO] [stderr]   Downloaded ryu v0.2.8
[INFO] [stderr]   Downloaded bit-set v0.5.1
[INFO] [stderr]   Downloaded lz4 v1.23.1
[INFO] [stderr]   Downloaded lz4-sys v1.8.3
[INFO] [stderr]   Downloaded proptest v0.9.3
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded serde_derive v1.0.91
[INFO] [stderr]   Downloaded serde_json v1.0.39
[INFO] [stderr]   Downloaded same-file v1.0.4
[INFO] [stderr]   Downloaded walkdir v2.2.7
[INFO] [stderr]   Downloaded tempfile v3.0.8
[INFO] [stderr]   Downloaded env_logger v0.6.1
[INFO] [stderr]   Downloaded byteorder v1.3.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.14
[INFO] [stderr]   Downloaded remove_dir_all v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac544325c25279c38b1a7df26adfa1b2e159e344149f6721f79cecad8a17a7e2
[INFO] running `Command { std: "docker" "start" "-a" "ac544325c25279c38b1a7df26adfa1b2e159e344149f6721f79cecad8a17a7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac544325c25279c38b1a7df26adfa1b2e159e344149f6721f79cecad8a17a7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac544325c25279c38b1a7df26adfa1b2e159e344149f6721f79cecad8a17a7e2", kill_on_drop: false }`
[INFO] [stdout] ac544325c25279c38b1a7df26adfa1b2e159e344149f6721f79cecad8a17a7e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ad72d68f5a6564c5d3f553f30d3cc307ba73688491ab90ce7f0cc1bbbd247d4
[INFO] running `Command { std: "docker" "start" "-a" "3ad72d68f5a6564c5d3f553f30d3cc307ba73688491ab90ce7f0cc1bbbd247d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling rustc-demangle v0.1.14
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling bytecount v0.4.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling lz4-sys v1.8.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.3
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling lz4 v1.23.1
[INFO] [stderr]     Checking binstore v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bucket.rs:349:6
[INFO] [stdout]     |
[INFO] [stdout] 349 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bucket.rs:353:6
[INFO] [stdout]     |
[INFO] [stdout] 353 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bucket.rs:349:6
[INFO] [stdout]     |
[INFO] [stdout] 349 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bucket.rs:353:6
[INFO] [stdout]     |
[INFO] [stdout] 353 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` in tuple element 1 that must be used
[INFO] [stdout]    --> src/bucket.rs:242:5
[INFO] [stdout]     |
[INFO] [stdout] 242 |     encoder.finish();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bucket.rs:685:17
[INFO] [stdout]     |
[INFO] [stdout] 685 |             let mut b = BTreeSet::new();
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` in tuple element 1 that must be used
[INFO] [stdout]    --> src/bucket.rs:242:5
[INFO] [stdout]     |
[INFO] [stdout] 242 |     encoder.finish();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.35s
[INFO] running `Command { std: "docker" "inspect" "3ad72d68f5a6564c5d3f553f30d3cc307ba73688491ab90ce7f0cc1bbbd247d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ad72d68f5a6564c5d3f553f30d3cc307ba73688491ab90ce7f0cc1bbbd247d4", kill_on_drop: false }`
[INFO] [stdout] 3ad72d68f5a6564c5d3f553f30d3cc307ba73688491ab90ce7f0cc1bbbd247d4