[INFO] fetching crate base64s 0.1.0...
[INFO] checking base64s-0.1.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate base64s 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate base64s 0.1.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate base64s 0.1.0
[INFO] finished tweaking crates.io crate base64s 0.1.0
[INFO] tweaked toml for crates.io crate base64s 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 361dd86a467403a82b3fa72a519dd47bdc4440961f56770ffe1fd4be6cb885c9
[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" "361dd86a467403a82b3fa72a519dd47bdc4440961f56770ffe1fd4be6cb885c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "361dd86a467403a82b3fa72a519dd47bdc4440961f56770ffe1fd4be6cb885c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "361dd86a467403a82b3fa72a519dd47bdc4440961f56770ffe1fd4be6cb885c9", kill_on_drop: false }`
[INFO] [stdout] 361dd86a467403a82b3fa72a519dd47bdc4440961f56770ffe1fd4be6cb885c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 184122c4d9954b674af79ae14743f857cd5860f1ae8c1b32ef4fd1e99099391f
[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" "184122c4d9954b674af79ae14743f857cd5860f1ae8c1b32ef4fd1e99099391f", kill_on_drop: false }`
[INFO] [stderr]     Checking base64s v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `binary_vec_vec`
[INFO] [stdout]    --> src/bases.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut binary_vec_vec: Vec<Vec<i32>> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binary_vec_vec`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:202:13
[INFO] [stdout]     |
[INFO] [stdout] 202 |         for i in pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/bases.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binary_vec_vec`
[INFO] [stdout]    --> src/bases.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |         let binary_vec_vec: Vec<Vec<i32>> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binary_vec_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |         for i in pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/bases.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:282:13
[INFO] [stdout]     |
[INFO] [stdout] 282 |         for i in 0..number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |             for i in 0..24 - remainder{
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:372:13
[INFO] [stdout]     |
[INFO] [stdout] 372 |         for i in 0..pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |         for i in 0..pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bases.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut char_vec = self.contrary_mapping(value, false);
[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/bases.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut binary_vec_vec: Vec<Vec<i32>> = Vec::new();
[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/bases.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let mut char_vec = self.contrary_mapping(value, true);
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binary_vec_vec`
[INFO] [stdout]    --> src/bases.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut binary_vec_vec: Vec<Vec<i32>> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binary_vec_vec`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:202:13
[INFO] [stdout]     |
[INFO] [stdout] 202 |         for i in pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/bases.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binary_vec_vec`
[INFO] [stdout]    --> src/bases.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |         let binary_vec_vec: Vec<Vec<i32>> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binary_vec_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |         for i in pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/bases.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:282:13
[INFO] [stdout]     |
[INFO] [stdout] 282 |         for i in 0..number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |             for i in 0..24 - remainder{
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:372:13
[INFO] [stdout]     |
[INFO] [stdout] 372 |         for i in 0..pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bases.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |         for i in 0..pad_number{
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bases.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut char_vec = self.contrary_mapping(value, false);
[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/bases.rs:193:13
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut binary_vec_vec: Vec<Vec<i32>> = Vec::new();
[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/bases.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let mut char_vec = self.contrary_mapping(value, true);
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "184122c4d9954b674af79ae14743f857cd5860f1ae8c1b32ef4fd1e99099391f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "184122c4d9954b674af79ae14743f857cd5860f1ae8c1b32ef4fd1e99099391f", kill_on_drop: false }`
[INFO] [stdout] 184122c4d9954b674af79ae14743f857cd5860f1ae8c1b32ef4fd1e99099391f