[INFO] fetching crate base64s 0.1.0...
[INFO] checking base64s-0.1.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate base64s 0.1.0 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate base64s 0.1.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b6c878592021ea6815f87202ef4ea4d132ecbe13ce750e6559e70bd8a2b1faa
[INFO] running `Command { std: "docker" "start" "-a" "8b6c878592021ea6815f87202ef4ea4d132ecbe13ce750e6559e70bd8a2b1faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b6c878592021ea6815f87202ef4ea4d132ecbe13ce750e6559e70bd8a2b1faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b6c878592021ea6815f87202ef4ea4d132ecbe13ce750e6559e70bd8a2b1faa", kill_on_drop: false }`
[INFO] [stdout] 8b6c878592021ea6815f87202ef4ea4d132ecbe13ce750e6559e70bd8a2b1faa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 381f83a41adaf3d326ee2f8e894ee7628747b65ee6b743779f2ed1102524110f
[INFO] running `Command { std: "docker" "start" "-a" "381f83a41adaf3d326ee2f8e894ee7628747b65ee6b743779f2ed1102524110f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking base64s v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `binary_vec_vec`
[INFO] [stdout]    --> src/bases.rs:193:17
[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:193:17
[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 0.46s
[INFO] running `Command { std: "docker" "inspect" "381f83a41adaf3d326ee2f8e894ee7628747b65ee6b743779f2ed1102524110f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381f83a41adaf3d326ee2f8e894ee7628747b65ee6b743779f2ed1102524110f", kill_on_drop: false }`
[INFO] [stdout] 381f83a41adaf3d326ee2f8e894ee7628747b65ee6b743779f2ed1102524110f