[INFO] cloning repository https://github.com/bodagovsky/rusty_parking_lot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bodagovsky/rusty_parking_lot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2Frusty_parking_lot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2Frusty_parking_lot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25a3063cf279a3c71831d2a5d6532e857ac8efac
[INFO] testing bodagovsky/rusty_parking_lot against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2Frusty_parking_lot" "/workspace/builds/worker-100/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-100/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bodagovsky/rusty_parking_lot on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bodagovsky/rusty_parking_lot
[INFO] finished tweaking git repo https://github.com/bodagovsky/rusty_parking_lot
[INFO] tweaked toml for git repo https://github.com/bodagovsky/rusty_parking_lot written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate git repo https://github.com/bodagovsky/rusty_parking_lot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec539cbca72624e6f949e3c00b71a0e4d25ee24ab2807dcc9458ba520aeb773e
[INFO] running `Command { std: "docker" "start" "-a" "ec539cbca72624e6f949e3c00b71a0e4d25ee24ab2807dcc9458ba520aeb773e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec539cbca72624e6f949e3c00b71a0e4d25ee24ab2807dcc9458ba520aeb773e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec539cbca72624e6f949e3c00b71a0e4d25ee24ab2807dcc9458ba520aeb773e", kill_on_drop: false }`
[INFO] [stdout] ec539cbca72624e6f949e3c00b71a0e4d25ee24ab2807dcc9458ba520aeb773e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56d405e6c31e2abd406c7fcdfbb7b8cd1fd038c45a01ba8812483ad0b56c7706
[INFO] running `Command { std: "docker" "start" "-a" "56d405e6c31e2abd406c7fcdfbb7b8cd1fd038c45a01ba8812483ad0b56c7706", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_parking_lot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/logic.rs:77:26
[INFO] [stdout]    |
[INFO] [stdout] 77 |                          {return String::from("no found slots")}}
[INFO] [stdout]    |                          ^                                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 77 -                          {return String::from("no found slots")}}
[INFO] [stdout] 77 +                          return String::from("no found slots")}
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/logic.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         {return String::from(format!("sorry, no plates with color {}", color))}}
[INFO] [stdout]    |                         ^                                                                     ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 90 -                         {return String::from(format!("sorry, no plates with color {}", color))}}
[INFO] [stdout] 90 +                         return String::from(format!("sorry, no plates with color {}", color))}
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/model.rs:58:14
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for (key, val) in self.slots.iter() {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cap` is never read
[INFO] [stdout]   --> src/logic.rs:36:29
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     let mut cap:i32 = 0;
[INFO] [stdout]    |                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.32s
[INFO] running `Command { std: "docker" "inspect" "56d405e6c31e2abd406c7fcdfbb7b8cd1fd038c45a01ba8812483ad0b56c7706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56d405e6c31e2abd406c7fcdfbb7b8cd1fd038c45a01ba8812483ad0b56c7706", kill_on_drop: false }`
[INFO] [stdout] 56d405e6c31e2abd406c7fcdfbb7b8cd1fd038c45a01ba8812483ad0b56c7706
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a5b262274659c51e7198b52295e56c3fc3604be91a48e682a2bf4235fe0d674
[INFO] running `Command { std: "docker" "start" "-a" "2a5b262274659c51e7198b52295e56c3fc3604be91a48e682a2bf4235fe0d674", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_parking_lot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/logic.rs:77:26
[INFO] [stdout]    |
[INFO] [stdout] 77 |                          {return String::from("no found slots")}}
[INFO] [stdout]    |                          ^                                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 77 -                          {return String::from("no found slots")}}
[INFO] [stdout] 77 +                          return String::from("no found slots")}
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/logic.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         {return String::from(format!("sorry, no plates with color {}", color))}}
[INFO] [stdout]    |                         ^                                                                     ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 90 -                         {return String::from(format!("sorry, no plates with color {}", color))}}
[INFO] [stdout] 90 +                         return String::from(format!("sorry, no plates with color {}", color))}
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/model.rs:58:14
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for (key, val) in self.slots.iter() {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cap` is never read
[INFO] [stdout]   --> src/logic.rs:36:29
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     let mut cap:i32 = 0;
[INFO] [stdout]    |                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut park = ParkingLot{
[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]   --> src/tests.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut park = ParkingLot{
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let mut park = ParkingLot{
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tests.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut park = ParkingLot{
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.50s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a5b262274659c51e7198b52295e56c3fc3604be91a48e682a2bf4235fe0d674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a5b262274659c51e7198b52295e56c3fc3604be91a48e682a2bf4235fe0d674", kill_on_drop: false }`
[INFO] [stdout] 2a5b262274659c51e7198b52295e56c3fc3604be91a48e682a2bf4235fe0d674
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3f3aded240a4f13eb4b47123c083253a4e7228c327e12e00c10440c1e442b766
[INFO] running `Command { std: "docker" "start" "-a" "3f3aded240a4f13eb4b47123c083253a4e7228c327e12e00c10440c1e442b766", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/logic.rs:77:26
[INFO] [stderr]    |
[INFO] [stderr] 77 |                          {return String::from("no found slots")}}
[INFO] [stderr]    |                          ^                                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 77 -                          {return String::from("no found slots")}}
[INFO] [stderr] 77 +                          return String::from("no found slots")}
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/logic.rs:90:25
[INFO] [stderr]    |
[INFO] [stderr] 90 |                         {return String::from(format!("sorry, no plates with color {}", color))}}
[INFO] [stderr]    |                         ^                                                                     ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 90 -                         {return String::from(format!("sorry, no plates with color {}", color))}}
[INFO] [stderr] 90 +                         return String::from(format!("sorry, no plates with color {}", color))}
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/model.rs:58:14
[INFO] [stderr]    |
[INFO] [stderr] 58 |         for (key, val) in self.slots.iter() {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `cap` is never read
[INFO] [stderr]   --> src/logic.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 |                     let mut cap:i32 = 0;
[INFO] [stderr]    |                             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tests.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut park = ParkingLot{
[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] [stdout] 
[INFO] [stderr]   --> src/tests.rs:54:13
[INFO] [stdout] running 7 tests
[INFO] [stderr]    |
[INFO] [stdout] test tests::tests::test_all_slots ... ok
[INFO] [stderr] 54 |         let mut park = ParkingLot{
[INFO] [stdout] test tests::tests::test_allocate_slot ... ok
[INFO] [stderr]    |             ----^^^^
[INFO] [stdout] test tests::tests::test_leave_slot ... ok
[INFO] [stderr]    |             |
[INFO] [stdout] test tests::tests::test_slot_by_plate ... ok
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stdout] test tests::tests::test_first_available ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::tests::test_plates_by_color ... ok
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] test tests::tests::test_get_slots_by_color ... ok
[INFO] [stderr]   --> src/tests.rs:73:13
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr] 73 |         let mut park = ParkingLot{
[INFO] [stdout] 
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tests.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |         let mut park = ParkingLot{
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_parking_lot` (bin "rust_parking_lot" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_parking_lot-db00717d3fff61dc)
[INFO] running `Command { std: "docker" "inspect" "3f3aded240a4f13eb4b47123c083253a4e7228c327e12e00c10440c1e442b766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f3aded240a4f13eb4b47123c083253a4e7228c327e12e00c10440c1e442b766", kill_on_drop: false }`
[INFO] [stdout] 3f3aded240a4f13eb4b47123c083253a4e7228c327e12e00c10440c1e442b766