[INFO] crate serde_closure 0.2.10 is already in cache
[INFO] testing serde_closure-0.2.10 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate serde_closure 0.2.10 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serde_closure 0.2.10 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde_closure 0.2.10
[INFO] finished tweaking crates.io crate serde_closure 0.2.10
[INFO] tweaked toml for crates.io crate serde_closure 0.2.10 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a005facf4ecae4e893b1f78a0f618a90bac86b2fcca5c8af287db459fa10de6e
[INFO] running `"docker" "start" "-a" "a005facf4ecae4e893b1f78a0f618a90bac86b2fcca5c8af287db459fa10de6e"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling serde_closure_derive v0.2.10
[INFO] [stderr]    Compiling serde_closure v0.2.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.57s
[INFO] running `"docker" "inspect" "a005facf4ecae4e893b1f78a0f618a90bac86b2fcca5c8af287db459fa10de6e"`
[INFO] running `"docker" "rm" "-f" "a005facf4ecae4e893b1f78a0f618a90bac86b2fcca5c8af287db459fa10de6e"`
[INFO] [stdout] a005facf4ecae4e893b1f78a0f618a90bac86b2fcca5c8af287db459fa10de6e
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stdout] da0810afc81241230b1359b68d8a978b19d0b4478dff01a3630d16e79b857626
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "da0810afc81241230b1359b68d8a978b19d0b4478dff01a3630d16e79b857626"`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling bincode v1.2.1
[INFO] [stderr]    Compiling serde_closure v0.2.10 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> tests/test.rs:376:25
[INFO] [stderr]     |
[INFO] [stderr] 376 |     let closure = FnOnce!(|x: &str| "test");
[INFO] [stderr]     |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> tests/test.rs:467:7
[INFO] [stderr]     |
[INFO] [stderr] 467 |         let a = &STATIC;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:100:18
[INFO] [stderr]     |
[INFO] [stderr] 100 |       let c = FnOnce!(move || -> String {
[INFO] [stderr]     |                       ^----
[INFO] [stderr]     |                       |
[INFO] [stderr]     |  _____________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 101 | |         for task in tasks {
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:387:24
[INFO] [stderr]     |
[INFO] [stderr] 387 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 388 | |         (b)();
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:387:24
[INFO] [stderr]     |
[INFO] [stderr] 387 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 388 | |         (b)();
[INFO] [stderr] 389 | |         // b();
[INFO] [stderr] 390 | |         // (b::<>)();
[INFO] [stderr] 391 | |         c;
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:406:24
[INFO] [stderr]     |
[INFO] [stderr] 406 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 407 | |         (b)();
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:417:24
[INFO] [stderr]     |
[INFO] [stderr] 417 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 418 | |         // (b)();
[INFO] [stderr] 419 | |         // b();
[INFO] [stderr] 420 | |         // (b::<>)();
[INFO] [stderr] 421 | |         c;
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:450:11
[INFO] [stderr]     |
[INFO] [stderr] 450 |           FnOnce!(move || {
[INFO] [stderr]     |                   ^----
[INFO] [stderr]     |                   |
[INFO] [stderr]     |  _________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 451 | |             let _ = x;
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:456:11
[INFO] [stderr]     |
[INFO] [stderr] 456 |           FnOnce!(move || {
[INFO] [stderr]     |                   ^----
[INFO] [stderr]     |                   |
[INFO] [stderr]     |  _________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 457 | |             let _ = x;
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:477:28
[INFO] [stderr]     |
[INFO] [stderr] 477 |         ::serde_closure::FnOnce!(|| a);
[INFO] [stderr]     |                                  ---^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:387:24
[INFO] [stderr]     |
[INFO] [stderr] 387 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |  ___________________________^
[INFO] [stderr] 388 | |         (b)();
[INFO] [stderr] 389 | |         // b();
[INFO] [stderr] 390 | |         // (b::<>)();
[INFO] [stderr] 391 | |         c;
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(path_statements)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:393:3
[INFO] [stderr]     |
[INFO] [stderr] 393 |         size_of::<()>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:417:24
[INFO] [stderr]     |
[INFO] [stderr] 417 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |  ___________________________^
[INFO] [stderr] 418 | |         // (b)();
[INFO] [stderr] 419 | |         // b();
[INFO] [stderr] 420 | |         // (b::<>)();
[INFO] [stderr] 421 | |         c;
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:423:3
[INFO] [stderr]     |
[INFO] [stderr] 423 |         size_of::<()>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:426:3
[INFO] [stderr]     |
[INFO] [stderr] 426 |         capturing::<>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:432:3
[INFO] [stderr]     |
[INFO] [stderr] 432 |         Foo;
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:433:3
[INFO] [stderr]     |
[INFO] [stderr] 433 |         foo::<>;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.67s
[INFO] running `"docker" "inspect" "da0810afc81241230b1359b68d8a978b19d0b4478dff01a3630d16e79b857626"`
[INFO] running `"docker" "rm" "-f" "da0810afc81241230b1359b68d8a978b19d0b4478dff01a3630d16e79b857626"`
[INFO] [stdout] da0810afc81241230b1359b68d8a978b19d0b4478dff01a3630d16e79b857626
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 33680dab16a64325418cfbb5991f30575bc091f1721c62701bcd72c0ce0bcfe4
[INFO] running `"docker" "start" "-a" "33680dab16a64325418cfbb5991f30575bc091f1721c62701bcd72c0ce0bcfe4"`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> tests/test.rs:376:25
[INFO] [stderr]     |
[INFO] [stderr] 376 |     let closure = FnOnce!(|x: &str| "test");
[INFO] [stderr]     |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> tests/test.rs:467:7
[INFO] [stderr]     |
[INFO] [stderr] 467 |         let a = &STATIC;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:100:18
[INFO] [stderr]     |
[INFO] [stderr] 100 |       let c = FnOnce!(move || -> String {
[INFO] [stderr]     |                       ^----
[INFO] [stderr]     |                       |
[INFO] [stderr]     |  _____________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 101 | |         for task in tasks {
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:387:24
[INFO] [stderr]     |
[INFO] [stderr] 387 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 388 | |         (b)();
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:387:24
[INFO] [stderr]     |
[INFO] [stderr] 387 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 388 | |         (b)();
[INFO] [stderr] 389 | |         // b();
[INFO] [stderr] 390 | |         // (b::<>)();
[INFO] [stderr] 391 | |         c;
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:406:24
[INFO] [stderr]     |
[INFO] [stderr] 406 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 407 | |         (b)();
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:417:24
[INFO] [stderr]     |
[INFO] [stderr] 417 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |                             ^----
[INFO] [stderr]     |                             |
[INFO] [stderr]     |  ___________________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 418 | |         // (b)();
[INFO] [stderr] 419 | |         // b();
[INFO] [stderr] 420 | |         // (b::<>)();
[INFO] [stderr] 421 | |         c;
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:450:11
[INFO] [stderr]     |
[INFO] [stderr] 450 |           FnOnce!(move || {
[INFO] [stderr]     |                   ^----
[INFO] [stderr]     |                   |
[INFO] [stderr]     |  _________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 451 | |             let _ = x;
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:456:11
[INFO] [stderr]     |
[INFO] [stderr] 456 |           FnOnce!(move || {
[INFO] [stderr]     |                   ^----
[INFO] [stderr]     |                   |
[INFO] [stderr]     |  _________________help: remove this `mut`
[INFO] [stderr]     | |
[INFO] [stderr] 457 | |             let _ = x;
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/test.rs:477:28
[INFO] [stderr]     |
[INFO] [stderr] 477 |         ::serde_closure::FnOnce!(|| a);
[INFO] [stderr]     |                                  ---^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:387:24
[INFO] [stderr]     |
[INFO] [stderr] 387 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |  ___________________________^
[INFO] [stderr] 388 | |         (b)();
[INFO] [stderr] 389 | |         // b();
[INFO] [stderr] 390 | |         // (b::<>)();
[INFO] [stderr] 391 | |         c;
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(path_statements)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:393:3
[INFO] [stderr]     |
[INFO] [stderr] 393 |         size_of::<()>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:417:24
[INFO] [stderr]     |
[INFO] [stderr] 417 |       let closure = FnOnce!(move || {
[INFO] [stderr]     |  ___________________________^
[INFO] [stderr] 418 | |         // (b)();
[INFO] [stderr] 419 | |         // b();
[INFO] [stderr] 420 | |         // (b::<>)();
[INFO] [stderr] 421 | |         c;
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:423:3
[INFO] [stderr]     |
[INFO] [stderr] 423 |         size_of::<()>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:426:3
[INFO] [stderr]     |
[INFO] [stderr] 426 |         capturing::<>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:432:3
[INFO] [stderr]     |
[INFO] [stderr] 432 |         Foo;
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]    --> tests/test.rs:433:3
[INFO] [stderr]     |
[INFO] [stderr] 433 |         foo::<>;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_closure-6c7d71c54931f6fa
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test-28c4ea8988c1ac25
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test fn_ptr_size ... ok
[INFO] [stdout] test fnref ... ok
[INFO] [stdout] test multiple_async ... ok
[INFO] [stdout] test capturing ... ok
[INFO] [stdout] test fnonce ... ok
[INFO] [stdout] test fnmut ... ok
[INFO] [stdout] test no_prelude::no_prelude ... ok
[INFO] [stdout] test source ... ok
[INFO] [stdout] test static_var ... ok
[INFO] [stdout] test upcast ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_closure
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/lib.rs -  (line 40) ... ok
[INFO] [stdout] test src/lib.rs -  (line 9) ... ok
[INFO] [stdout] test src/lib.rs -  (line 84) ... ok
[INFO] [stdout] test src/lib.rs -  (line 68) ... ok
[INFO] [stdout] test src/lib.rs -  (line 54) ... ok
[INFO] [stdout] test src/lib.rs -  (line 75) ... ok
[INFO] [stdout] test src/lib.rs -  (line 60) ... ok
[INFO] [stdout] test src/lib.rs -  (line 46) ... ok
[INFO] [stdout] test src/lib.rs -  (line 94) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "33680dab16a64325418cfbb5991f30575bc091f1721c62701bcd72c0ce0bcfe4"`
[INFO] running `"docker" "rm" "-f" "33680dab16a64325418cfbb5991f30575bc091f1721c62701bcd72c0ce0bcfe4"`
[INFO] [stdout] 33680dab16a64325418cfbb5991f30575bc091f1721c62701bcd72c0ce0bcfe4