[INFO] fetching crate mouscache 0.5.6...
[INFO] checking mouscache-0.5.6 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate mouscache 0.5.6 into /workspace/builds/worker-5-tc2/source
[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-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mouscache 0.5.6 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "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 83 packages to latest compatible versions
[INFO] [stderr]       Adding dns-lookup v0.9.1 (available: v3.0.1)
[INFO] [stderr]       Adding parking_lot v0.6.4 (available: v0.12.5)
[INFO] [stderr]       Adding redis v0.10.0 (available: v1.0.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9af9e06e1857aa5aa4ee8457ca6878ee4b7c771e8d635f1b16d8354c064368a1
[INFO] running `Command { std: "docker" "start" "-a" "9af9e06e1857aa5aa4ee8457ca6878ee4b7c771e8d635f1b16d8354c064368a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9af9e06e1857aa5aa4ee8457ca6878ee4b7c771e8d635f1b16d8354c064368a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9af9e06e1857aa5aa4ee8457ca6878ee4b7c771e8d635f1b16d8354c064368a1", kill_on_drop: false }`
[INFO] [stdout] 9af9e06e1857aa5aa4ee8457ca6878ee4b7c771e8d635f1b16d8354c064368a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27e66f07ad9d3a210afc7527155860855b5ef8acba1255acc8cf7c50b65e4ac3
[INFO] running `Command { std: "docker" "start" "-a" "27e66f07ad9d3a210afc7527155860855b5ef8acba1255acc8cf7c50b65e4ac3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]    Compiling redis v0.10.0
[INFO] [stderr]     Checking ascii v0.9.3
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking parking_lot_core v0.6.3
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[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 v0.12.5
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking dns-lookup v0.9.1
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.7
[INFO] [stderr]     Checking r2d2 v0.8.10
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[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)]` (part of `#[warn(unused)]`) 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: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: 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)]` (part of `#[warn(unused)]`) 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: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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.60s
[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 14`
[INFO] running `Command { std: "docker" "inspect" "27e66f07ad9d3a210afc7527155860855b5ef8acba1255acc8cf7c50b65e4ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27e66f07ad9d3a210afc7527155860855b5ef8acba1255acc8cf7c50b65e4ac3", kill_on_drop: false }`
[INFO] [stdout] 27e66f07ad9d3a210afc7527155860855b5ef8acba1255acc8cf7c50b65e4ac3
