[INFO] fetching crate cain 0.1.2...
[INFO] testing cain-0.1.2 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate cain 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate cain 0.1.2 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cain 0.1.2
[INFO] finished tweaking crates.io crate cain 0.1.2
[INFO] tweaked toml for crates.io crate cain 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] [stderr]       Adding yansi v0.5.1 (latest: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22e412f497fcc1f3bc4def1c7bfbca924b2c01263c7138595cdf7cadaf59c717
[INFO] running `Command { std: "docker" "start" "-a" "22e412f497fcc1f3bc4def1c7bfbca924b2c01263c7138595cdf7cadaf59c717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22e412f497fcc1f3bc4def1c7bfbca924b2c01263c7138595cdf7cadaf59c717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22e412f497fcc1f3bc4def1c7bfbca924b2c01263c7138595cdf7cadaf59c717", kill_on_drop: false }`
[INFO] [stdout] 22e412f497fcc1f3bc4def1c7bfbca924b2c01263c7138595cdf7cadaf59c717
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8783a3afc4fd28f548dd948d92bd43722a189c40b8048fc1f0c2bb74017ffb79
[INFO] running `Command { std: "docker" "start" "-a" "8783a3afc4fd28f548dd948d92bd43722a189c40b8048fc1f0c2bb74017ffb79", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.20s
[INFO] running `Command { std: "docker" "inspect" "8783a3afc4fd28f548dd948d92bd43722a189c40b8048fc1f0c2bb74017ffb79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8783a3afc4fd28f548dd948d92bd43722a189c40b8048fc1f0c2bb74017ffb79", kill_on_drop: false }`
[INFO] [stdout] 8783a3afc4fd28f548dd948d92bd43722a189c40b8048fc1f0c2bb74017ffb79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12f593f6c0d99698f6f62d05238a6900c4e86bef159a929731df9183e4e107c6
[INFO] running `Command { std: "docker" "start" "-a" "12f593f6c0d99698f6f62d05238a6900c4e86bef159a929731df9183e4e107c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.83
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pretty_assertions v1.4.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling cain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> tests/diverging_branches.rs:26:25
[INFO] [stdout]    |
[INFO] [stdout] 26 |                     let x = match n {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> tests/diverging_branches.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |                     let y = match n % 2 {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> tests/diverging_branches.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |                     let x = match n % 3 {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/no_behavior_change.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 Some(mut v) => { v.pop(); },
[INFO] [stdout]    |                      ----^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/no_behavior_change.rs:78:22
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 Some(mut b) => inc(&mut b),
[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]    --> tests/no_behavior_change.rs:109:22
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 Some(mut b) => inc(&mut b),
[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]    --> tests/no_behavior_change.rs:140:26
[INFO] [stdout]     |
[INFO] [stdout] 140 |                 Some(ref mut b) => inc(b),
[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]    --> tests/no_behavior_change.rs:154:37
[INFO] [stdout]     |
[INFO] [stdout] 154 |             let _ = if let Some(ref mut b) = &mut a {
[INFO] [stdout]     |                                     ----^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> tests/no_behavior_change.rs:179:16
[INFO] [stdout]     |
[INFO] [stdout] 179 |             if let None = a {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.18s
[INFO] running `Command { std: "docker" "inspect" "12f593f6c0d99698f6f62d05238a6900c4e86bef159a929731df9183e4e107c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f593f6c0d99698f6f62d05238a6900c4e86bef159a929731df9183e4e107c6", kill_on_drop: false }`
[INFO] [stdout] 12f593f6c0d99698f6f62d05238a6900c4e86bef159a929731df9183e4e107c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41f2984d916aec34f9a38594c5e578493debdc297728e5c34f49e626f55b34ed
[INFO] running `Command { std: "docker" "start" "-a" "41f2984d916aec34f9a38594c5e578493debdc297728e5c34f49e626f55b34ed", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> tests/diverging_branches.rs:31:30
[INFO] [stderr]    |
[INFO] [stderr] 31 |                         _ => panic!() as &str,
[INFO] [stderr]    |                              --------^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              unreachable expression
[INFO] [stderr]    |                              any code following this expression is unreachable
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> tests/diverging_branches.rs:56:30
[INFO] [stderr]    |
[INFO] [stderr] 56 |                         _ => panic!() as &str,
[INFO] [stderr]    |                              --------^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              unreachable expression
[INFO] [stderr]    |                              any code following this expression is unreachable
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> tests/diverging_branches.rs:49:30
[INFO] [stderr]    |
[INFO] [stderr] 49 |                         _ => panic!() as &str,
[INFO] [stderr]    |                              --------^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              unreachable expression
[INFO] [stderr]    |                              any code following this expression is unreachable
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> tests/diverging_branches.rs:26:25
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     let x = match n {
[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] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> tests/diverging_branches.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |                     let y = match n % 2 {
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> tests/diverging_branches.rs:44:25
[INFO] [stderr]    |
[INFO] [stderr] 44 |                     let x = match n % 3 {
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/no_behavior_change.rs:64:22
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 Some(mut v) => { v.pop(); },
[INFO] [stderr]    |                      ----^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/no_behavior_change.rs:78:22
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 Some(mut b) => inc(&mut b),
[INFO] [stderr]    |                      ----^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/no_behavior_change.rs:109:22
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 Some(mut b) => inc(&mut b),
[INFO] [stderr]     |                      ----^
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/no_behavior_change.rs:140:26
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 Some(ref mut b) => inc(b),
[INFO] [stderr]     |                          ----^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/no_behavior_change.rs:154:37
[INFO] [stderr]     |
[INFO] [stderr] 154 |             let _ = if let Some(ref mut b) = &mut a {
[INFO] [stderr]     |                                     ----^
[INFO] [stderr]     |                                     |
[INFO] [stderr]     |                                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]    --> tests/no_behavior_change.rs:179:16
[INFO] [stderr]     |
[INFO] [stderr] 179 |             if let None = a {
[INFO] [stderr]     |                ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]     = help: consider replacing the `if let` with a `let`
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cain` (test "diverging_branches") generated 9 warnings (3 duplicates)
[INFO] [stderr] warning: `cain` (test "no_behavior_change") generated 6 warnings (run `cargo fix --test "no_behavior_change"` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cain-d17813d7a4489712)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test codegen_tests::empty ... ok
[INFO] [stdout] test codegen_tests::closure_outer_inner ... ok
[INFO] [stdout] test codegen_tests::for_inner ... ok
[INFO] [stdout] test codegen_tests::closure_inner ... ok
[INFO] [stdout] test codegen_tests::async_inner ... ok
[INFO] [stdout] test codegen_tests::async_outer_inner ... ok
[INFO] [stdout] test codegen_tests::identifier ... ok
[INFO] [stdout] test codegen_tests::if_simple ... ok
[INFO] [stdout] test codegen_tests::literal ... ok
[INFO] [stdout] test codegen_tests::loop_inner ... ok
[INFO] [stdout] test codegen_tests::if_double ... ok
[INFO] [stdout] test codegen_tests::item_stmts ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat ... ok
[INFO] [stdout] test codegen_tests::if_let_ident ... ok
[INFO] [stdout] test codegen_tests::match_ident_double ... ok
[INFO] [stdout] test codegen_tests::match_double ... ok
[INFO] [stdout] test codegen_tests::for_outer_inner ... ok
[INFO] [stdout] test codegen_tests::match_let_chain ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat_2 ... ok
[INFO] [stdout] test codegen_tests::sipmle_stmt ... ok
[INFO] [stdout] test codegen_tests::loop_outer_inner ... ok
[INFO] [stdout] test codegen_tests::if_nested_cond ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat_3 ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat_4 ... ok
[INFO] [stdout] test codegen_tests::match_nested_cond ... ok
[INFO] [stdout] test codegen_tests::match_simple ... ok
[INFO] [stdout] test codegen_tests::try_inner ... ok
[INFO] [stdout] test codegen_tests::try_outer_inner ... ok
[INFO] [stdout] test codegen_tests::while_inner_outer ... ok
[INFO] [stdout] test codegen_tests::while_inner ... ok
[INFO] [stdout] test codegen_tests::simple_expr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/diverging_branches.rs (/opt/rustwide/target/debug/deps/diverging_branches-8b0816a4476d3a42)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test double_diverging_branches ... ok
[INFO] [stdout] test simple_diverging_branches ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/no_behavior_change.rs (/opt/rustwide/target/debug/deps/no_behavior_change-c5106b1335a4c58b)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test behavior_2_a ... ok
[INFO] [stdout] test behavior_2_b ... ok
[INFO] [stdout] test behavior_3_a ... ok
[INFO] [stdout] test behavior_1_a ... ok
[INFO] [stdout] test behavior_1_b ... ok
[INFO] [stdout] test behavior_4_a ... ok
[INFO] [stdout] test behavior_3_b ... ok
[INFO] [stdout] test issue_1 ... ok
[INFO] [stdout] test behavior_4_b ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cain
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "41f2984d916aec34f9a38594c5e578493debdc297728e5c34f49e626f55b34ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f2984d916aec34f9a38594c5e578493debdc297728e5c34f49e626f55b34ed", kill_on_drop: false }`
[INFO] [stdout] 41f2984d916aec34f9a38594c5e578493debdc297728e5c34f49e626f55b34ed
[INFO] testing cain-0.1.2 against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] extracting crate cain 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate cain 0.1.2 on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cain 0.1.2
[INFO] finished tweaking crates.io crate cain 0.1.2
[INFO] tweaked toml for crates.io crate cain 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] [stderr]       Adding yansi v0.5.1 (latest: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0103710eab5ad6d6e4c5ee8a06deb0f39168909f22aca2973cbf3fc534836443
[INFO] running `Command { std: "docker" "start" "-a" "0103710eab5ad6d6e4c5ee8a06deb0f39168909f22aca2973cbf3fc534836443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0103710eab5ad6d6e4c5ee8a06deb0f39168909f22aca2973cbf3fc534836443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0103710eab5ad6d6e4c5ee8a06deb0f39168909f22aca2973cbf3fc534836443", kill_on_drop: false }`
[INFO] [stdout] 0103710eab5ad6d6e4c5ee8a06deb0f39168909f22aca2973cbf3fc534836443
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3c2b7f2846ce1e422c1e383a55ca7bfb8d47f7e6f6a3f3f5d63b821a6c3be29
[INFO] running `Command { std: "docker" "start" "-a" "a3c2b7f2846ce1e422c1e383a55ca7bfb8d47f7e6f6a3f3f5d63b821a6c3be29", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.16s
[INFO] running `Command { std: "docker" "inspect" "a3c2b7f2846ce1e422c1e383a55ca7bfb8d47f7e6f6a3f3f5d63b821a6c3be29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c2b7f2846ce1e422c1e383a55ca7bfb8d47f7e6f6a3f3f5d63b821a6c3be29", kill_on_drop: false }`
[INFO] [stdout] a3c2b7f2846ce1e422c1e383a55ca7bfb8d47f7e6f6a3f3f5d63b821a6c3be29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f70ed5c68ebe928d4609f7dee5142d3fccf3015488d787708f11066b5d3b1f4
[INFO] running `Command { std: "docker" "start" "-a" "2f70ed5c68ebe928d4609f7dee5142d3fccf3015488d787708f11066b5d3b1f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.83
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pretty_assertions v1.4.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling cain v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> tests/diverging_branches.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         _ => panic!() as &str,
[INFO] [stdout]    |                              --------^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable expression
[INFO] [stdout]    |                              any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> tests/diverging_branches.rs:26:25
[INFO] [stdout]    |
[INFO] [stdout] 26 |                     let x = match n {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> tests/diverging_branches.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |                     let y = match n % 2 {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> tests/diverging_branches.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |                     let x = match n % 3 {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/no_behavior_change.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 Some(mut v) => { v.pop(); },
[INFO] [stdout]    |                      ----^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/no_behavior_change.rs:78:22
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 Some(mut b) => inc(&mut b),
[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]    --> tests/no_behavior_change.rs:109:22
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 Some(mut b) => inc(&mut b),
[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]    --> tests/no_behavior_change.rs:140:26
[INFO] [stdout]     |
[INFO] [stdout] 140 |                 Some(ref mut b) => inc(b),
[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]    --> tests/no_behavior_change.rs:154:37
[INFO] [stdout]     |
[INFO] [stdout] 154 |             let _ = if let Some(ref mut b) = &mut a {
[INFO] [stdout]     |                                     ----^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> tests/no_behavior_change.rs:179:16
[INFO] [stdout]     |
[INFO] [stdout] 179 |             if let None = a {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.13s
[INFO] running `Command { std: "docker" "inspect" "2f70ed5c68ebe928d4609f7dee5142d3fccf3015488d787708f11066b5d3b1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f70ed5c68ebe928d4609f7dee5142d3fccf3015488d787708f11066b5d3b1f4", kill_on_drop: false }`
[INFO] [stdout] 2f70ed5c68ebe928d4609f7dee5142d3fccf3015488d787708f11066b5d3b1f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f70b1a2e7cae10ad436510a40a0a5055534f08ae47cfa226eabca36aa1544004
[INFO] running `Command { std: "docker" "start" "-a" "f70b1a2e7cae10ad436510a40a0a5055534f08ae47cfa226eabca36aa1544004", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/no_behavior_change.rs:64:22
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 Some(mut v) => { v.pop(); },
[INFO] [stderr]    |                      ----^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/no_behavior_change.rs:78:22
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 Some(mut b) => inc(&mut b),
[INFO] [stderr]    |                      ----^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/no_behavior_change.rs:109:22
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 Some(mut b) => inc(&mut b),
[INFO] [stderr]     |                      ----^
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/no_behavior_change.rs:140:26
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 Some(ref mut b) => inc(b),
[INFO] [stderr]     |                          ----^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/no_behavior_change.rs:154:37
[INFO] [stderr]     |
[INFO] [stderr] 154 |             let _ = if let Some(ref mut b) = &mut a {
[INFO] [stderr]     |                                     ----^
[INFO] [stderr]     |                                     |
[INFO] [stderr]     |                                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]    --> tests/no_behavior_change.rs:179:16
[INFO] [stderr]     |
[INFO] [stderr] 179 |             if let None = a {
[INFO] [stderr]     |                ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]     = help: consider replacing the `if let` with a `let`
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> tests/diverging_branches.rs:31:30
[INFO] [stderr]    |
[INFO] [stderr] 31 |                         _ => panic!() as &str,
[INFO] [stderr]    |                              --------^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              unreachable expression
[INFO] [stderr]    |                              any code following this expression is unreachable
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> tests/diverging_branches.rs:56:30
[INFO] [stderr]    |
[INFO] [stderr] 56 |                         _ => panic!() as &str,
[INFO] [stderr]    |                              --------^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              unreachable expression
[INFO] [stderr]    |                              any code following this expression is unreachable
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> tests/diverging_branches.rs:49:30
[INFO] [stderr]    |
[INFO] [stderr] 49 |                         _ => panic!() as &str,
[INFO] [stderr]    |                              --------^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              unreachable expression
[INFO] [stderr]    |                              any code following this expression is unreachable
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> tests/diverging_branches.rs:26:25
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     let x = match n {
[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] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> tests/diverging_branches.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |                     let y = match n % 2 {
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> tests/diverging_branches.rs:44:25
[INFO] [stderr]    |
[INFO] [stderr] 44 |                     let x = match n % 3 {
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: `cain` (test "no_behavior_change") generated 6 warnings (run `cargo fix --test "no_behavior_change"` to apply 5 suggestions)
[INFO] [stderr] warning: `cain` (test "diverging_branches") generated 9 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cain-d17813d7a4489712)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test codegen_tests::closure_inner ... ok
[INFO] [stdout] test codegen_tests::async_inner ... ok
[INFO] [stdout] test codegen_tests::async_outer_inner ... ok
[INFO] [stdout] test codegen_tests::identifier ... ok
[INFO] [stdout] test codegen_tests::for_outer_inner ... ok
[INFO] [stdout] test codegen_tests::if_double ... ok
[INFO] [stdout] test codegen_tests::if_simple ... ok
[INFO] [stdout] test codegen_tests::if_let_ident ... ok
[INFO] [stdout] test codegen_tests::literal ... ok
[INFO] [stdout] test codegen_tests::loop_inner ... ok
[INFO] [stdout] test codegen_tests::if_nested_cond ... ok
[INFO] [stdout] test codegen_tests::closure_outer_inner ... ok
[INFO] [stdout] test codegen_tests::match_double ... ok
[INFO] [stdout] test codegen_tests::loop_outer_inner ... ok
[INFO] [stdout] test codegen_tests::empty ... ok
[INFO] [stdout] test codegen_tests::for_inner ... ok
[INFO] [stdout] test codegen_tests::match_ident_double ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat_4 ... ok
[INFO] [stdout] test codegen_tests::item_stmts ... ok
[INFO] [stdout] test codegen_tests::match_let_chain ... ok
[INFO] [stdout] test codegen_tests::sipmle_stmt ... ok
[INFO] [stdout] test codegen_tests::match_nested_cond ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat_3 ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat_2 ... ok
[INFO] [stdout] test codegen_tests::match_ident_pat ... ok
[INFO] [stdout] test codegen_tests::match_simple ... ok
[INFO] [stdout] test codegen_tests::simple_expr ... ok
[INFO] [stdout] test codegen_tests::try_outer_inner ... ok
[INFO] [stdout] test codegen_tests::try_inner ... ok
[INFO] [stdout] test codegen_tests::while_inner ... ok
[INFO] [stdout] test codegen_tests::while_inner_outer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/diverging_branches.rs (/opt/rustwide/target/debug/deps/diverging_branches-8b0816a4476d3a42)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test double_diverging_branches ... ok
[INFO] [stdout] test simple_diverging_branches ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/no_behavior_change.rs (/opt/rustwide/target/debug/deps/no_behavior_change-c5106b1335a4c58b)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test behavior_1_a ... ok
[INFO] [stdout] test behavior_1_b ... ok
[INFO] [stdout] test behavior_2_a ... ok
[INFO] [stdout] test behavior_2_b ... ok
[INFO] [stdout] test behavior_3_a ... ok
[INFO] [stdout] test behavior_4_a ... ok
[INFO] [stdout] test behavior_3_b ... ok
[INFO] [stderr]    Doc-tests cain
[INFO] [stdout] test behavior_4_b ... ok
[INFO] [stdout] test issue_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f70b1a2e7cae10ad436510a40a0a5055534f08ae47cfa226eabca36aa1544004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f70b1a2e7cae10ad436510a40a0a5055534f08ae47cfa226eabca36aa1544004", kill_on_drop: false }`
[INFO] [stdout] f70b1a2e7cae10ad436510a40a0a5055534f08ae47cfa226eabca36aa1544004
