[INFO] updating cached repository https://github.com/aizyurov/meccano
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25424a0150ed6185644fe16315cf73a989b14f5c
[INFO] checking aizyurov/meccano against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faizyurov%2Fmeccano" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aizyurov/meccano on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aizyurov/meccano
[INFO] finished tweaking git repo https://github.com/aizyurov/meccano
[INFO] tweaked toml for git repo https://github.com/aizyurov/meccano written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/aizyurov/meccano already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3834c5689225877109d238c0cb490a29ee8394030d54dd58808ca067b55e4b6
[INFO] running `"docker" "start" "-a" "a3834c5689225877109d238c0cb490a29ee8394030d54dd58808ca067b55e4b6"`
[INFO] [stderr]     Checking anymap v0.11.2
[INFO] [stderr]     Checking meccano v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]   --> src/lib.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 | use std::any::TypeId;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Empty`
[INFO] [stderr]   --> src/lib.rs:70:27
[INFO] [stderr]    |
[INFO] [stderr] 70 | use std::iter::{Iterator, Empty};
[INFO] [stderr]    |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:87:11
[INFO] [stderr]    |
[INFO] [stderr] 87 |     map: Map<AnymapAny + Send>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AnymapAny + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:92:11
[INFO] [stderr]    |
[INFO] [stderr] 92 |     ctr: Box<Constructor<T>>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Constructor<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:98:26
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn new(constructor: Box<Constructor<T>>) -> Binding<T> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Constructor<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:128:58
[INFO] [stderr]     |
[INFO] [stderr] 128 |     pub fn keys<'a, T: Any + Clone + Send>(&'a self) -> Box<Iterator<Item=&'static str> + 'a> {
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'static str> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:139:11
[INFO] [stderr]     |
[INFO] [stderr] 139 |     map: Map<AnymapAny + Send>,    
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AnymapAny + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]   --> src/lib.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 | use std::any::TypeId;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Empty`
[INFO] [stderr]   --> src/lib.rs:70:27
[INFO] [stderr]    |
[INFO] [stderr] 70 | use std::iter::{Iterator, Empty};
[INFO] [stderr]    |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:87:11
[INFO] [stderr]    |
[INFO] [stderr] 87 |     map: Map<AnymapAny + Send>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AnymapAny + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:92:11
[INFO] [stderr]    |
[INFO] [stderr] 92 |     ctr: Box<Constructor<T>>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Constructor<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:98:26
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn new(constructor: Box<Constructor<T>>) -> Binding<T> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Constructor<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:128:58
[INFO] [stderr]     |
[INFO] [stderr] 128 |     pub fn keys<'a, T: Any + Clone + Send>(&'a self) -> Box<Iterator<Item=&'static str> + 'a> {
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'static str> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:139:11
[INFO] [stderr]     |
[INFO] [stderr] 139 |     map: Map<AnymapAny + Send>,    
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AnymapAny + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/lib.rs:174:17
[INFO] [stderr]     |
[INFO] [stderr] 174 |     rules.add("", |ctx: & Context| {32});
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/lib.rs:175:17
[INFO] [stderr]     |
[INFO] [stderr] 175 |     rules.add("", |ctx: & Context| {33});
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]   --> examples/multithreaded.rs:27:23
[INFO] [stderr]    |
[INFO] [stderr] 27 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]    |                          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/multithreaded.rs:71:91
[INFO] [stderr]    |
[INFO] [stderr] 71 |     rules.add("one", |ctx: &Context| Arc::new(Service1{pool: pool_config::pool(ctx)}) as Arc<Service>);
[INFO] [stderr]    |                                                                                              ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/multithreaded.rs:74:92
[INFO] [stderr]    |
[INFO] [stderr] 74 |     rules.add("two", |ctx: &Context| Arc::new(Service2{pool: pool_config::pool(ctx)})  as Arc<Service>);
[INFO] [stderr]    |                                                                                               ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/multithreaded.rs:77:28
[INFO] [stderr]    |
[INFO] [stderr] 77 |     let mut services: Vec<Arc<Service>> = Vec::new();
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/multithreaded.rs:80:41
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let names = locked_context.keys::<Arc<Service>>().collect::<Vec<&str>>();
[INFO] [stderr]    |                                               ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/multithreaded.rs:83:43
[INFO] [stderr]    |
[INFO] [stderr] 83 |             services.push(locked_context.get::<Arc<Service>>(name));
[INFO] [stderr]    |                                                    ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]  --> examples/iterate.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]   --> examples/iterate.rs:16:23
[INFO] [stderr]    |
[INFO] [stderr] 16 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]    |                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/iterate.rs:71:97
[INFO] [stderr]    |
[INFO] [stderr] 71 |     rules.add("one", |ctx: &Context| Arc::new(Service1{pool: connection_pool::inject(ctx)}) as Arc<Service>);
[INFO] [stderr]    |                                                                                                    ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/iterate.rs:74:98
[INFO] [stderr]    |
[INFO] [stderr] 74 |     rules.add("two", |ctx: &Context| Arc::new(Service2{pool: connection_pool::inject(ctx)})  as Arc<Service>);
[INFO] [stderr]    |                                                                                                     ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/iterate.rs:76:28
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut services: Vec<Arc<Service>> = Vec::new();
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/iterate.rs:77:29
[INFO] [stderr]    |
[INFO] [stderr] 77 |     for name in ctx.keys::<Arc<Service>>() {
[INFO] [stderr]    |                                ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/iterate.rs:78:31
[INFO] [stderr]    |
[INFO] [stderr] 78 |         services.push(ctx.get::<Arc<Service>>(name));
[INFO] [stderr]    |                                     ^^^^^^^ help: use `dyn`: `dyn Service`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]  --> examples/basic.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> examples/multithreaded.rs:89:7
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let ctx = ctx.clone();
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> examples/multithreaded.rs:36:43
[INFO] [stderr]    |
[INFO] [stderr] 36 |         rules.add("connection.pool.size", move |ctx: &Context| size);
[INFO] [stderr]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]  --> tests/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::any::TypeId;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> tests/lib.rs:115:11
[INFO] [stderr]     |
[INFO] [stderr] 115 |     for i in (1..5) {
[INFO] [stderr]     |              ^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> examples/basic.rs:30:37
[INFO] [stderr]    |
[INFO] [stderr] 30 |     rules.add("connection.pool.size", |ctx: &Context| 32);
[INFO] [stderr]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/lib.rs:198:65
[INFO] [stderr]     |
[INFO] [stderr] 198 |     rules.add("", |ctx: &Context| Arc::new(Impl{factor: 2}) as Arc<Trait> );
[INFO] [stderr]     |                                                                    ^^^^^ help: use `dyn`: `dyn Trait`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/lib.rs:200:24
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let m = ctx.get::<Arc<Trait>>("");
[INFO] [stderr]     |                           ^^^^^ help: use `dyn`: `dyn Trait`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> examples/basic.rs:12:2
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(size: i32) -> ConnectionPool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> examples/iterate.rs:36:43
[INFO] [stderr]    |
[INFO] [stderr] 36 |         rules.add("connection.pool.size", move |ctx: &Context| size);
[INFO] [stderr]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> tests/lib.rs:170:22
[INFO] [stderr]     |
[INFO] [stderr] 170 |     rules.add("value", |ctx: &Context| 365);
[INFO] [stderr]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> tests/lib.rs:171:27
[INFO] [stderr]     |
[INFO] [stderr] 171 |     rules.add("otherValue", |ctx: &Context| 365);
[INFO] [stderr]     |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> tests/lib.rs:22:22
[INFO] [stderr]    |
[INFO] [stderr] 22 |     rules.add("value", |ctx: &Context| 365);
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> tests/lib.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 |     rules.add("other_value", |ctx: &Context| 365);
[INFO] [stderr]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> tests/lib.rs:39:6
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let ctx = rules.commit();
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> tests/lib.rs:48:28
[INFO] [stderr]    |
[INFO] [stderr] 48 |     rules.add("other_value", |ctx: &Context| 365);
[INFO] [stderr]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dependent`
[INFO] [stderr]   --> tests/lib.rs:50:6
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let dependent = ctx.get::<Dependent>("");
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dependent`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> tests/lib.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |     rules.add("value", |ctx: &Context| 365);
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dependent`
[INFO] [stderr]   --> tests/lib.rs:61:6
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let dependent = ctx.get::<Dependent>("");
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dependent`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `short`
[INFO] [stderr]   --> tests/lib.rs:74:6
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let short = ctx.get::<Arc<List>>("");
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_short`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]   --> tests/lib.rs:91:6
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let head = rules.commit().get::<Arc<Head>>("");
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> tests/lib.rs:99:22
[INFO] [stderr]    |
[INFO] [stderr] 99 |     rules.add("value", |ctx: &Context| 365);
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> tests/lib.rs:111:22
[INFO] [stderr]     |
[INFO] [stderr] 111 |     rules.add("value", |ctx: &Context| 365);
[INFO] [stderr]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> tests/lib.rs:115:6
[INFO] [stderr]     |
[INFO] [stderr] 115 |     for i in (1..5) {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> tests/lib.rs:159:22
[INFO] [stderr]     |
[INFO] [stderr] 159 |     rules.add("value", |ctx: &Context| 365);
[INFO] [stderr]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> tests/lib.rs:160:27
[INFO] [stderr]     |
[INFO] [stderr] 160 |     rules.add("otherValue", |ctx: &Context| 365);
[INFO] [stderr]     |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> tests/lib.rs:198:17
[INFO] [stderr]     |
[INFO] [stderr] 198 |     rules.add("", |ctx: &Context| Arc::new(Impl{factor: 2}) as Arc<Trait> );
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `next`
[INFO] [stderr]   --> tests/lib.rs:65:2
[INFO] [stderr]    |
[INFO] [stderr] 65 |     next: Arc<List>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `tail`
[INFO] [stderr]   --> tests/lib.rs:78:2
[INFO] [stderr]    |
[INFO] [stderr] 78 |     tail: Arc<Tail>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `head`
[INFO] [stderr]   --> tests/lib.rs:82:2
[INFO] [stderr]    |
[INFO] [stderr] 82 |     head: Arc<Head>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `iterate`
[INFO] [stderr]    --> tests/lib.rs:168:4
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn iterate() {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 25 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `"docker" "inspect" "a3834c5689225877109d238c0cb490a29ee8394030d54dd58808ca067b55e4b6"`
[INFO] running `"docker" "rm" "-f" "a3834c5689225877109d238c0cb490a29ee8394030d54dd58808ca067b55e4b6"`
[INFO] [stdout] a3834c5689225877109d238c0cb490a29ee8394030d54dd58808ca067b55e4b6