[INFO] fetching crate mouscache 0.5.6...
[INFO] checking mouscache-0.5.6 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate mouscache 0.5.6 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mouscache 0.5.6 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mouscache 0.5.6
[INFO] finished tweaking crates.io crate mouscache 0.5.6
[INFO] tweaked toml for crates.io crate mouscache 0.5.6 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 92 packages to latest compatible versions
[INFO] [stderr]       Adding ascii v0.9.3 (latest: v1.1.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.6.0)
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.7.1)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
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[INFO] [stderr]       Adding futures v0.1.31 (latest: v0.3.30)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
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[INFO] [stderr]       Adding lock_api v0.1.5 (latest: v0.4.12)
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[INFO] [stderr]       Adding mio v0.6.23 (latest: v1.0.2)
[INFO] [stderr]       Adding miow v0.2.2 (latest: v0.6.0)
[INFO] [stderr]       Adding parking_lot v0.6.4 (latest: v0.12.3)
[INFO] [stderr]       Adding parking_lot v0.9.0 (latest: v0.12.3)
[INFO] [stderr]       Adding parking_lot_core v0.3.1 (latest: v0.9.10)
[INFO] [stderr]       Adding parking_lot_core v0.6.3 (latest: v0.9.10)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
[INFO] [stderr]       Adding rand v0.5.6 (latest: v0.8.5)
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[INFO] [stderr]       Adding redis v0.10.0 (latest: v0.26.1)
[INFO] [stderr]       Adding redox_syscall v0.1.57 (latest: v0.5.3)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.1)
[INFO] [stderr]       Adding scopeguard v0.3.3 (latest: v1.2.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.23)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding sha1 v0.6.1 (latest: v0.10.6)
[INFO] [stderr]       Adding smallvec v0.6.14 (latest: v1.13.2)
[INFO] [stderr]       Adding socket2 v0.3.19 (latest: v0.5.7)
[INFO] [stderr]       Adding url v1.7.2 (latest: v2.5.2)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scopeguard v0.3.3
[INFO] [stderr]   Downloaded parking_lot v0.6.4
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded redis v0.10.0
[INFO] [stderr]   Downloaded dns-lookup v0.9.1
[INFO] [stderr]   Downloaded lock_api v0.1.5
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6131543e14c9bfad024e2ae673c95fef665f9bf289562c66aa359c956811254
[INFO] running `Command { std: "docker" "start" "-a" "d6131543e14c9bfad024e2ae673c95fef665f9bf289562c66aa359c956811254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6131543e14c9bfad024e2ae673c95fef665f9bf289562c66aa359c956811254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6131543e14c9bfad024e2ae673c95fef665f9bf289562c66aa359c956811254", kill_on_drop: false }`
[INFO] [stdout] d6131543e14c9bfad024e2ae673c95fef665f9bf289562c66aa359c956811254
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c43173517a70b7dbb3e4714e51fe7fd6d46b655de4d9cc399e68641abbc126d2
[INFO] running `Command { std: "docker" "start" "-a" "c43173517a70b7dbb3e4714e51fe7fd6d46b655de4d9cc399e68641abbc126d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking tinyvec v1.8.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]    Compiling redis v0.10.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking sha1_smol v1.0.1
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[INFO] [stderr]     Checking ascii v0.9.3
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking sha1 v0.6.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.7
[INFO] [stderr]     Checking dns-lookup v0.9.1
[INFO] [stderr]     Checking r2d2 v0.8.10
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-executor v0.1.10
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[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking mouscache v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `contains_key` is never used
[INFO] [stdout]   --> src/lib.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | trait CacheAccess {
[INFO] [stdout]    |       ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn contains_key<K: ToString, O: Cacheable + Clone + 'static>(&self, key: K) -> Result<bool>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `redis_key_exists` is never used
[INFO] [stdout]    --> src/redis_cache.rs:242:4
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn redis_key_exists(con: &redis::Connection, key: String) -> Result<bool> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `contains_key` is never used
[INFO] [stdout]   --> src/lib.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | trait CacheAccess {
[INFO] [stdout]    |       ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn contains_key<K: ToString, O: Cacheable + Clone + 'static>(&self, key: K) -> Result<bool>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `redis_key_exists` is never used
[INFO] [stdout]    --> src/redis_cache.rs:242:4
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn redis_key_exists(con: &redis::Connection, key: String) -> Result<bool> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:223:38
[INFO] [stdout]     |
[INFO] [stdout] 223 |                 vec.push(reader.get(f.clone()).map(|s| s.clone()));
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:313:25
[INFO] [stdout]     |
[INFO] [stdout] 313 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:331:25
[INFO] [stdout]     |
[INFO] [stdout] 331 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:352:25
[INFO] [stdout]     |
[INFO] [stdout] 352 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:223:38
[INFO] [stdout]     |
[INFO] [stdout] 223 |                 vec.push(reader.get(f.clone()).map(|s| s.clone()));
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:370:25
[INFO] [stdout]     |
[INFO] [stdout] 370 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:313:25
[INFO] [stdout]     |
[INFO] [stdout] 313 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:331:25
[INFO] [stdout]     |
[INFO] [stdout] 331 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:352:25
[INFO] [stdout]     |
[INFO] [stdout] 352 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:370:25
[INFO] [stdout]     |
[INFO] [stdout] 370 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:439:25
[INFO] [stdout]     |
[INFO] [stdout] 439 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:457:25
[INFO] [stdout]     |
[INFO] [stdout] 457 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:439:25
[INFO] [stdout]     |
[INFO] [stdout] 439 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/memory_cache.rs:457:25
[INFO] [stdout]     |
[INFO] [stdout] 457 |             sets.get(key.clone())
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.54s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.10.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "c43173517a70b7dbb3e4714e51fe7fd6d46b655de4d9cc399e68641abbc126d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c43173517a70b7dbb3e4714e51fe7fd6d46b655de4d9cc399e68641abbc126d2", kill_on_drop: false }`
[INFO] [stdout] c43173517a70b7dbb3e4714e51fe7fd6d46b655de4d9cc399e68641abbc126d2