[INFO] fetching crate drumatech 0.1.9...
[INFO] checking drumatech-0.1.9 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate drumatech 0.1.9 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate drumatech 0.1.9 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f922f2844c4c9fa8ad876be1c5cd3232475bc2976ee3c8d29742049fce89522a
[INFO] running `Command { std: "docker" "start" "-a" "f922f2844c4c9fa8ad876be1c5cd3232475bc2976ee3c8d29742049fce89522a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f922f2844c4c9fa8ad876be1c5cd3232475bc2976ee3c8d29742049fce89522a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f922f2844c4c9fa8ad876be1c5cd3232475bc2976ee3c8d29742049fce89522a", kill_on_drop: false }`
[INFO] [stdout] f922f2844c4c9fa8ad876be1c5cd3232475bc2976ee3c8d29742049fce89522a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3016094e6ac659d0ca2be80429696e5895b1c35d0bc4f38397838fc3765d88fd
[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" "3016094e6ac659d0ca2be80429696e5895b1c35d0bc4f38397838fc3765d88fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking 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] 
[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] 
[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: 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: 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: 7 warnings emitted
[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 16.29s
[INFO] running `Command { std: "docker" "inspect" "3016094e6ac659d0ca2be80429696e5895b1c35d0bc4f38397838fc3765d88fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3016094e6ac659d0ca2be80429696e5895b1c35d0bc4f38397838fc3765d88fd", kill_on_drop: false }`
[INFO] [stdout] 3016094e6ac659d0ca2be80429696e5895b1c35d0bc4f38397838fc3765d88fd