[INFO] fetching crate diff_match_patch 0.1.1...
[INFO] building diff_match_patch-0.1.1 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate diff_match_patch 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate diff_match_patch 0.1.1 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate diff_match_patch 0.1.1
[INFO] finished tweaking crates.io crate diff_match_patch 0.1.1
[INFO] tweaked toml for crates.io crate diff_match_patch 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate diff_match_patch 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc7ccecf82cdd0146c5167306c8ba435e7bd87214eaf0c66ff1440fa6ea798af
[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" "dc7ccecf82cdd0146c5167306c8ba435e7bd87214eaf0c66ff1440fa6ea798af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc7ccecf82cdd0146c5167306c8ba435e7bd87214eaf0c66ff1440fa6ea798af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc7ccecf82cdd0146c5167306c8ba435e7bd87214eaf0c66ff1440fa6ea798af", kill_on_drop: false }`
[INFO] [stdout] dc7ccecf82cdd0146c5167306c8ba435e7bd87214eaf0c66ff1440fa6ea798af
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4615c7e26509c3f34461f44ccfee12213990dd60ed56696ad00c76fd67b582c
[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" "f4615c7e26509c3f34461f44ccfee12213990dd60ed56696ad00c76fd67b582c", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling unicode-normalization v0.1.8
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling diff_match_patch v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dmp.rs:932:13
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let mut text1_trunc;
[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/dmp.rs:933:13
[INFO] [stdout]     |
[INFO] [stdout] 933 |         let mut text2_trunc;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dmp.rs:932:13
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let mut text1_trunc;
[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/dmp.rs:933:13
[INFO] [stdout]     |
[INFO] [stdout] 933 |         let mut text2_trunc;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diff_words_tochars`
[INFO] [stdout]    --> src/dmp.rs:702:12
[INFO] [stdout]     |
[INFO] [stdout] 702 |     pub fn diff_words_tochars(&mut self, text1: &String, text2: &String) -> (String, String, Vec<String>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diff_words_tochars_munge`
[INFO] [stdout]    --> src/dmp.rs:725:12
[INFO] [stdout]     |
[INFO] [stdout] 725 |     pub fn diff_words_tochars_munge(&mut self, text: &String, wordarray: &mut Vec<String>, wordhash: &mut HashMap<String, u32>) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `make_token_dict`
[INFO] [stdout]    --> src/dmp.rs:757:8
[INFO] [stdout]     |
[INFO] [stdout] 757 |     fn make_token_dict(&mut self, word: &str , wordarray: &mut Vec<String>, wordhash: &mut HashMap<String, u32>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.27s
[INFO] running `Command { std: "docker" "inspect" "f4615c7e26509c3f34461f44ccfee12213990dd60ed56696ad00c76fd67b582c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4615c7e26509c3f34461f44ccfee12213990dd60ed56696ad00c76fd67b582c", kill_on_drop: false }`
[INFO] [stdout] f4615c7e26509c3f34461f44ccfee12213990dd60ed56696ad00c76fd67b582c
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", 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] 71fadf4b8ea07cb6457e67d9b12898d96e8b8c107b73504d80ba7916100e18f5
[INFO] running `Command { std: "docker" "start" "-a" "71fadf4b8ea07cb6457e67d9b12898d96e8b8c107b73504d80ba7916100e18f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling diff_match_patch v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dmp.rs:932:13
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let mut text1_trunc;
[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/dmp.rs:933:13
[INFO] [stdout]     |
[INFO] [stdout] 933 |         let mut text2_trunc;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dmp.rs:932:13
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let mut text1_trunc;
[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/dmp.rs:933:13
[INFO] [stdout]     |
[INFO] [stdout] 933 |         let mut text2_trunc;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diff_words_tochars`
[INFO] [stdout]    --> src/dmp.rs:702:12
[INFO] [stdout]     |
[INFO] [stdout] 702 |     pub fn diff_words_tochars(&mut self, text1: &String, text2: &String) -> (String, String, Vec<String>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diff_words_tochars_munge`
[INFO] [stdout]    --> src/dmp.rs:725:12
[INFO] [stdout]     |
[INFO] [stdout] 725 |     pub fn diff_words_tochars_munge(&mut self, text: &String, wordarray: &mut Vec<String>, wordhash: &mut HashMap<String, u32>) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `make_token_dict`
[INFO] [stdout]    --> src/dmp.rs:757:8
[INFO] [stdout]     |
[INFO] [stdout] 757 |     fn make_token_dict(&mut self, word: &str , wordarray: &mut Vec<String>, wordhash: &mut HashMap<String, u32>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dmp.rs:932:13
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let mut text1_trunc;
[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/dmp.rs:933:13
[INFO] [stdout]     |
[INFO] [stdout] 933 |         let mut text2_trunc;
[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/dmp.rs:932:13
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let mut text1_trunc;
[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/dmp.rs:933:13
[INFO] [stdout]     |
[INFO] [stdout] 933 |         let mut text2_trunc;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diff_words_tochars`
[INFO] [stdout]    --> src/dmp.rs:702:12
[INFO] [stdout]     |
[INFO] [stdout] 702 |     pub fn diff_words_tochars(&mut self, text1: &String, text2: &String) -> (String, String, Vec<String>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diff_words_tochars_munge`
[INFO] [stdout]    --> src/dmp.rs:725:12
[INFO] [stdout]     |
[INFO] [stdout] 725 |     pub fn diff_words_tochars_munge(&mut self, text: &String, wordarray: &mut Vec<String>, wordhash: &mut HashMap<String, u32>) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `make_token_dict`
[INFO] [stdout]    --> src/dmp.rs:757:8
[INFO] [stdout]     |
[INFO] [stdout] 757 |     fn make_token_dict(&mut self, word: &str , wordarray: &mut Vec<String>, wordhash: &mut HashMap<String, u32>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "71fadf4b8ea07cb6457e67d9b12898d96e8b8c107b73504d80ba7916100e18f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71fadf4b8ea07cb6457e67d9b12898d96e8b8c107b73504d80ba7916100e18f5", kill_on_drop: false }`
[INFO] [stdout] 71fadf4b8ea07cb6457e67d9b12898d96e8b8c107b73504d80ba7916100e18f5
