[INFO] cloning repository https://github.com/adamritter/synced_collection
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adamritter/synced_collection" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamritter%2Fsynced_collection", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamritter%2Fsynced_collection'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0270fd40b294be1e164219a771458f038c5c2c54
[INFO] checking adamritter/synced_collection against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamritter%2Fsynced_collection" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/adamritter/synced_collection
[INFO] finished tweaking git repo https://github.com/adamritter/synced_collection
[INFO] tweaked toml for git repo https://github.com/adamritter/synced_collection written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/adamritter/synced_collection on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/adamritter/synced_collection already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.77
[INFO] [stderr]   Downloaded tokio v1.22.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21b38900481f0bbcd3f6db672bd154ee096a5f115b3c4e733a0768760726c835
[INFO] running `Command { std: "docker" "start" "-a" "21b38900481f0bbcd3f6db672bd154ee096a5f115b3c4e733a0768760726c835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21b38900481f0bbcd3f6db672bd154ee096a5f115b3c4e733a0768760726c835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21b38900481f0bbcd3f6db672bd154ee096a5f115b3c4e733a0768760726c835", kill_on_drop: false }`
[INFO] [stdout] 21b38900481f0bbcd3f6db672bd154ee096a5f115b3c4e733a0768760726c835
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 176f0089bf07d2a1e990bdfab60e7caa3f4dd10a39414a30b9eaadbe9a5b619d
[INFO] running `Command { std: "docker" "start" "-a" "176f0089bf07d2a1e990bdfab60e7caa3f4dd10a39414a30b9eaadbe9a5b619d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling tokio v1.22.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking uuid v1.2.2
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]     Checking synccollection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Weak`
[INFO] [stdout]  --> src/queryable_streaming_multi_map.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashSet, HashMap}, cell::RefCell, rc::{Rc, Weak}, marker::PhantomData};
[INFO] [stdout]   |                                                                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Weak`
[INFO] [stdout]  --> src/queryable_streaming_multi_map.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashSet, HashMap}, cell::RefCell, rc::{Rc, Weak}, marker::PhantomData};
[INFO] [stdout]   |                                                                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:517:9
[INFO] [stdout]     |
[INFO] [stdout] 517 |     let mut map1 = StreamingHashMultiMapWithCount::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:518:9
[INFO] [stdout]     |
[INFO] [stdout] 518 |     let mut map2 = StreamingHashMultiMapWithCount::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |     let mut map1 = StreamingHashMultiMapWithCount::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:549:9
[INFO] [stdout]     |
[INFO] [stdout] 549 |     let mut map2 = StreamingHashMultiMapWithCount::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:562:9
[INFO] [stdout]     |
[INFO] [stdout] 562 |     let mut map1 = StreamingHashMultiMapWithCount::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:572:9
[INFO] [stdout]     |
[INFO] [stdout] 572 |     let mut map1 = StreamingHashMultiMapWithCount::new();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:577:9
[INFO] [stdout]     |
[INFO] [stdout] 577 |     let l=map1.listeners();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `source_getter` is never read
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub struct FilterQuerableStreamingMultiMap<'source, 'listener, 'last_source, K:Eq+Hash+Clone+'static,V:Eq+Hash+Clone+'static,
[INFO] [stdout]     |            ------------------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 212 |     source_getter: RcBorrow<'last_source, Source::Getter>
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_getter` and `source2_getter` are never read
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:325:5
[INFO] [stdout]     |
[INFO] [stdout] 316 | pub struct JoinQuerableStreamingMultiMap<'source, 'listener, 'last_source, K:Eq+Hash+Clone+'static,V:Eq+Hash+Clone+'static, V2:Eq+H...
[INFO] [stdout]     |            ----------------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 325 |     source_getter: RcBorrow<'last_source, Source::Getter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 326 |     source2_getter: RcBorrow<'last_source, Source2::Getter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:453:32
[INFO] [stdout]     |
[INFO] [stdout] 453 |     pub fn group(&'a self)->Rc<StreamingHashMultiMapWithCount<K,V>> {
[INFO] [stdout]     |                   --           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 453 |     pub fn group(&'a self)->Rc<StreamingHashMultiMapWithCount<'a, K,V>> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `source_getter` is never read
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub struct FilterQuerableStreamingMultiMap<'source, 'listener, 'last_source, K:Eq+Hash+Clone+'static,V:Eq+Hash+Clone+'static,
[INFO] [stdout]     |            ------------------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 212 |     source_getter: RcBorrow<'last_source, Source::Getter>
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `source_getter` and `source2_getter` are never read
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:325:5
[INFO] [stdout]     |
[INFO] [stdout] 316 | pub struct JoinQuerableStreamingMultiMap<'source, 'listener, 'last_source, K:Eq+Hash+Clone+'static,V:Eq+Hash+Clone+'static, V2:Eq+H...
[INFO] [stdout]     |            ----------------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 325 |     source_getter: RcBorrow<'last_source, Source::Getter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 326 |     source2_getter: RcBorrow<'last_source, Source2::Getter>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/queryable_streaming_multi_map.rs:453:32
[INFO] [stdout]     |
[INFO] [stdout] 453 |     pub fn group(&'a self)->Rc<StreamingHashMultiMapWithCount<K,V>> {
[INFO] [stdout]     |                   --           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 453 |     pub fn group(&'a self)->Rc<StreamingHashMultiMapWithCount<'a, K,V>> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.38s
[INFO] running `Command { std: "docker" "inspect" "176f0089bf07d2a1e990bdfab60e7caa3f4dd10a39414a30b9eaadbe9a5b619d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176f0089bf07d2a1e990bdfab60e7caa3f4dd10a39414a30b9eaadbe9a5b619d", kill_on_drop: false }`
[INFO] [stdout] 176f0089bf07d2a1e990bdfab60e7caa3f4dd10a39414a30b9eaadbe9a5b619d
