[INFO] fetching crate diff_match_patch 0.1.1...
[INFO] building diff_match_patch-0.1.1 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate diff_match_patch 0.1.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate diff_match_patch 0.1.1 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "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-10/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1da0a522c2d093b53efbf58bf9773f06459d7c205a966f84da0d02e26002515d
[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" "1da0a522c2d093b53efbf58bf9773f06459d7c205a966f84da0d02e26002515d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1da0a522c2d093b53efbf58bf9773f06459d7c205a966f84da0d02e26002515d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1da0a522c2d093b53efbf58bf9773f06459d7c205a966f84da0d02e26002515d", kill_on_drop: false }`
[INFO] [stdout] 1da0a522c2d093b53efbf58bf9773f06459d7c205a966f84da0d02e26002515d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3578cfd02fdaf675f4387771cb14310dcfe7d1593b7388fe2850533e3349c757
[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" "3578cfd02fdaf675f4387771cb14310dcfe7d1593b7388fe2850533e3349c757", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling regex v1.3.7
[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 10.72s
[INFO] running `Command { std: "docker" "inspect" "3578cfd02fdaf675f4387771cb14310dcfe7d1593b7388fe2850533e3349c757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3578cfd02fdaf675f4387771cb14310dcfe7d1593b7388fe2850533e3349c757", kill_on_drop: false }`
[INFO] [stdout] 3578cfd02fdaf675f4387771cb14310dcfe7d1593b7388fe2850533e3349c757
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "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] ae9c40cb46fd6aeb16869a38a14195f2001b1e602a7acf1946a46f5565e87c1e
[INFO] running `Command { std: "docker" "start" "-a" "ae9c40cb46fd6aeb16869a38a14195f2001b1e602a7acf1946a46f5565e87c1e", 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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.90s
[INFO] running `Command { std: "docker" "inspect" "ae9c40cb46fd6aeb16869a38a14195f2001b1e602a7acf1946a46f5565e87c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9c40cb46fd6aeb16869a38a14195f2001b1e602a7acf1946a46f5565e87c1e", kill_on_drop: false }`
[INFO] [stdout] ae9c40cb46fd6aeb16869a38a14195f2001b1e602a7acf1946a46f5565e87c1e
