[INFO] fetching crate drumatech 0.1.9...
[INFO] testing drumatech-0.1.9 against 1.54.0 for beta-1.55-1
[INFO] extracting crate drumatech 0.1.9 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate drumatech 0.1.9 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drumatech 0.1.9
[INFO] finished tweaking crates.io crate drumatech 0.1.9
[INFO] tweaked toml for crates.io crate drumatech 0.1.9 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c320e7cadf038278c0448316310dcb84df405599412da32eb5f1d79e9898d49
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1c320e7cadf038278c0448316310dcb84df405599412da32eb5f1d79e9898d49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c320e7cadf038278c0448316310dcb84df405599412da32eb5f1d79e9898d49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c320e7cadf038278c0448316310dcb84df405599412da32eb5f1d79e9898d49", kill_on_drop: false }`
[INFO] [stdout] 1c320e7cadf038278c0448316310dcb84df405599412da32eb5f1d79e9898d49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28f31adbfe40932d47b68c3afeedae39a1bb4d0816320668ded9ede7886b604b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "28f31adbfe40932d47b68c3afeedae39a1bb4d0816320668ded9ede7886b604b", kill_on_drop: false }`
[INFO] [stderr]    Compiling drumatech v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fileu.rs:10:59
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn filepath_to_content(s: &str) -> Result<String, Box<std::error::Error>> {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/structure.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let mut idx: usize = self.size;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/structure.rs:318:13
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let mut idx: usize = self.size;
[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: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:271:12
[INFO] [stdout]     |
[INFO] [stdout] 271 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "28f31adbfe40932d47b68c3afeedae39a1bb4d0816320668ded9ede7886b604b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f31adbfe40932d47b68c3afeedae39a1bb4d0816320668ded9ede7886b604b", kill_on_drop: false }`
[INFO] [stdout] 28f31adbfe40932d47b68c3afeedae39a1bb4d0816320668ded9ede7886b604b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c05aef01d755fdaaabfc3b94a26742c21125dd44c009c59a29286b59911dd950
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c05aef01d755fdaaabfc3b94a26742c21125dd44c009c59a29286b59911dd950", kill_on_drop: false }`
[INFO] [stderr]    Compiling drumatech v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fileu.rs:10:59
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn filepath_to_content(s: &str) -> Result<String, Box<std::error::Error>> {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/structure.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let mut idx: usize = self.size;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/structure.rs:318:13
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let mut idx: usize = self.size;
[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: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:271:12
[INFO] [stdout]     |
[INFO] [stdout] 271 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fileu.rs:10:59
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn filepath_to_content(s: &str) -> Result<String, Box<std::error::Error>> {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/structure.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let mut idx: usize = self.size;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/structure.rs:318:13
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let mut idx: usize = self.size;
[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: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:271:12
[INFO] [stdout]     |
[INFO] [stdout] 271 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/structure.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |         if 0 > index || self.size < index {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "c05aef01d755fdaaabfc3b94a26742c21125dd44c009c59a29286b59911dd950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c05aef01d755fdaaabfc3b94a26742c21125dd44c009c59a29286b59911dd950", kill_on_drop: false }`
[INFO] [stdout] c05aef01d755fdaaabfc3b94a26742c21125dd44c009c59a29286b59911dd950
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 903a90c56b5bacedf600dcc241a4c39411254803c710e9a10da29f2600e47edc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "903a90c56b5bacedf600dcc241a4c39411254803c710e9a10da29f2600e47edc", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/fileu.rs:10:59
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn filepath_to_content(s: &str) -> Result<String, Box<std::error::Error>> {
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]    --> src/structure.rs:318:17
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let mut idx: usize = self.size;
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/structure.rs:318:13
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let mut idx: usize = self.size;
[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: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:141:12
[INFO] [stderr]     |
[INFO] [stderr] 141 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:271:12
[INFO] [stderr]     |
[INFO] [stderr] 271 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:288:12
[INFO] [stderr]     |
[INFO] [stderr] 288 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/fileu.rs:10:59
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn filepath_to_content(s: &str) -> Result<String, Box<std::error::Error>> {
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]    --> src/structure.rs:318:17
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let mut idx: usize = self.size;
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/structure.rs:318:13
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let mut idx: usize = self.size;
[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: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:141:12
[INFO] [stderr]     |
[INFO] [stderr] 141 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:271:12
[INFO] [stderr]     |
[INFO] [stderr] 271 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/structure.rs:288:12
[INFO] [stderr]     |
[INFO] [stderr] 288 |         if 0 > index || self.size < index {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/drumatech-2f64d1576664cf5f)
[INFO] [stderr]    Doc-tests drumatech
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test src/conv.rs - conv::get (line 52) ... FAILED
[INFO] [stdout] test src/structure.rs - structure::ArrayStack<T>::get (line 133) ... ok
[INFO] [stdout] test src/conv.rs - conv::open_box (line 39) ... ok
[INFO] [stdout] test src/structure.rs - structure::ArrayStack<T>::set (line 150) ... ok
[INFO] [stdout] test src/conv.rs - conv::u8_to_string (line 23) ... ok
[INFO] [stdout] test src/structure.rs - structure::ArrayQueue<T>::remove (line 437) ... FAILED
[INFO] [stdout] test src/fileu.rs - fileu::filepath_to_content (line 5) ... ok
[INFO] [stdout] test src/structure.rs - structure::FastArrayStack<T>::get (line 263) ... ok
[INFO] [stdout] test src/structure.rs - structure::ArrayStack<T>::resize (line 203) ... ok
[INFO] [stdout] test src/structure.rs - structure::ArrayQueue<T>::add (line 416) ... ok
[INFO] [stdout] test src/conv.rs - conv::u8_give_string (line 5) ... ok
[INFO] [stdout] test src/fileu.rs - fileu::content_or_raw (line 23) ... ok
[INFO] [stdout] test src/structure.rs - structure::FastArrayStack<T>::add (line 303) ... ok
[INFO] [stdout] test src/structure.rs - structure::ArrayStack<T>::add (line 173) ... ok
[INFO] [stdout] test src/structure.rs - structure::FastArrayStack<T>::remove (line 362) ... ok
[INFO] [stdout] test src/structure.rs - structure::ArrayStack<T>::remove (line 225) ... ok
[INFO] [stdout] test src/structure.rs - structure::FastArrayStack<T>::resize (line 340) ... ok
[INFO] [stdout] test src/structure.rs - structure::FastArrayStack<T>::set (line 280) ... ok
[INFO] [stdout] test src/structure.rs - structure::Stack<T>::new (line 12) ... ok
[INFO] [stdout] test src/structure.rs - structure::Stack<T>::pop (line 58) ... ok
[INFO] [stdout] test src/structure.rs - structure::Stack<T>::allocate (line 28) ... ok
[INFO] [stdout] test src/structure.rs - structure::Stack<T>::base (line 98) ... ok
[INFO] [stdout] test src/structure.rs - structure::Stack<T>::push (line 43) ... ok
[INFO] [stdout] test src/structure.rs - structure::Stack<T>::top (line 77) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/conv.rs - conv::get (line 52) stdout ----
[INFO] [stdout] error: expected one of `->`, `;`, `where`, or `{`, found `}`
[INFO] [stdout]  --> src/conv.rs:57:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn get<T>(v:Vec<>)
[INFO] [stdout]   |        ---            - expected one of `->`, `;`, `where`, or `{`
[INFO] [stdout]   |        |
[INFO] [stdout]   |        while parsing this `fn`
[INFO] [stdout] 7 | } _doctest_main_src_conv_rs_52_0() }
[INFO] [stdout]   | ^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: free function without a body
[INFO] [stdout]  --> src/conv.rs:56:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn get<T>(v:Vec<>)
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]   |                      |
[INFO] [stdout]   |                      help: provide a definition for the function: `{ <body> }`
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this struct takes at least 1 generic argument but 0 generic arguments were supplied
[INFO] [stdout]    --> src/conv.rs:56:17
[INFO] [stdout]     |
[INFO] [stdout] 6   | pub fn get<T>(v:Vec<>)
[INFO] [stdout]     |                 ^^^ expected at least 1 generic argument
[INFO] [stdout]     |
[INFO] [stdout] note: struct defined here, with at least 1 generic parameter: `T`
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]     |
[INFO] [stdout] 6   | pub fn get<T>(v:Vec<T>)
[INFO] [stdout]     |                     ^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0107`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/structure.rs - structure::ArrayQueue<T>::remove (line 437) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `3`,
[INFO] [stdout]  right: `5`', src/structure.rs:9:1
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5600d41a8ca0 - std::backtrace_rs::backtrace::libunwind::trace::h34055254b57d8e79
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x5600d41a8ca0 - std::backtrace_rs::backtrace::trace_unsynchronized::h8f1e3fbd9afff6ec
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5600d41a8ca0 - std::sys_common::backtrace::_print_fmt::h3a99a796b770c360
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x5600d41a8ca0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h32d1f94a80615d18
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x5600d41c22cc - core::fmt::write::h306731c068f7162c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/fmt/mod.rs:1110:17
[INFO] [stdout]    5:     0x5600d41a7705 - std::io::Write::write_fmt::hd2fa90334eee2a21
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/io/mod.rs:1588:15
[INFO] [stdout]    6:     0x5600d41aa8cb - std::sys_common::backtrace::_print::h5abaa2601a852287
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x5600d41aa8cb - std::sys_common::backtrace::print::h8d81445442bb638f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x5600d41aa8cb - std::panicking::default_hook::{{closure}}::hcfe804496a9fa747
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x5600d41aa3a1 - std::panicking::default_hook::hbea8e3ccf2ba8901
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:225:9
[INFO] [stdout]   10:     0x5600d41aaf94 - std::panicking::rust_panic_with_hook::h7ee9e1a2d0f8975a
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x5600d41aaa77 - std::panicking::begin_panic_handler::{{closure}}::h8ab3b4491718b2c7
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x5600d41a919c - std::sys_common::backtrace::__rust_end_short_backtrace::hd489062ffa586a9f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x5600d41aa9d9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x5600d4195e31 - core::panicking::panic_fmt::hca6330e3e14086b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x5600d41c1588 - core::panicking::assert_failed_inner::h33b45280069a80ed
[INFO] [stdout]   16:     0x5600d4197506 - core::panicking::assert_failed::hca6270898e1daf26
[INFO] [stdout]   17:     0x5600d41995e2 - rust_out::main::_doctest_main_src_structure_rs_437_0::h376d33d45cc5528d
[INFO] [stdout]   18:     0x5600d4199376 - rust_out::main::h2a38bb51b9580a7d
[INFO] [stdout]   19:     0x5600d4196ea3 - core::ops::function::FnOnce::call_once::hb73b95e6982fd3f0
[INFO] [stdout]   20:     0x5600d41968c9 - std::sys_common::backtrace::__rust_begin_short_backtrace::h8371d112165838d3
[INFO] [stdout]   21:     0x5600d4196939 - std::rt::lang_start::{{closure}}::h783adf50233ec5ec
[INFO] [stdout]   22:     0x5600d41ab499 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2aabc384aab89b7b
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:259:13
[INFO] [stdout]   23:     0x5600d41ab499 - std::panicking::try::do_call::hc5fcacb7a85fc7b1
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stdout]   24:     0x5600d41ab499 - std::panicking::try::hb5d9603af3abbe3a
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stdout]   25:     0x5600d41ab499 - std::panic::catch_unwind::h98fe6ac3925e64b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stdout]   26:     0x5600d41ab499 - std::rt::lang_start_internal::h22ac7383c516f93e
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/rt.rs:34:21
[INFO] [stdout]   27:     0x5600d4196921 - std::rt::lang_start::h11b9716471e37ff8
[INFO] [stdout]   28:     0x5600d4199613 - main
[INFO] [stdout]   29:     0x7f29b0d7f0b3 - __libc_start_main
[INFO] [stdout]   30:     0x5600d419658e - _start
[INFO] [stdout]   31:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/conv.rs - conv::get (line 52)
[INFO] [stdout]     src/structure.rs - structure::ArrayQueue<T>::remove (line 437)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 22 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.29s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "903a90c56b5bacedf600dcc241a4c39411254803c710e9a10da29f2600e47edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "903a90c56b5bacedf600dcc241a4c39411254803c710e9a10da29f2600e47edc", kill_on_drop: false }`
[INFO] [stdout] 903a90c56b5bacedf600dcc241a4c39411254803c710e9a10da29f2600e47edc
