[INFO] fetching crate quill-delta 0.0.1...
[INFO] testing quill-delta-0.0.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate quill-delta 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate quill-delta 0.0.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quill-delta 0.0.1
[INFO] finished tweaking crates.io crate quill-delta 0.0.1
[INFO] tweaked toml for crates.io crate quill-delta 0.0.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ff2486a1a99125d24ced5b1425dbce38a90bd5aef45f2f84a04af8c6464148b
[INFO] running `Command { std: "docker" "start" "-a" "2ff2486a1a99125d24ced5b1425dbce38a90bd5aef45f2f84a04af8c6464148b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ff2486a1a99125d24ced5b1425dbce38a90bd5aef45f2f84a04af8c6464148b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ff2486a1a99125d24ced5b1425dbce38a90bd5aef45f2f84a04af8c6464148b", kill_on_drop: false }`
[INFO] [stdout] 2ff2486a1a99125d24ced5b1425dbce38a90bd5aef45f2f84a04af8c6464148b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 859b4b24f91065f68e60ecbfdd4d61f437b4db434fb0b5ebc69b5ffb1650a3c2
[INFO] running `Command { std: "docker" "start" "-a" "859b4b24f91065f68e60ecbfdd4d61f437b4db434fb0b5ebc69b5ffb1650a3c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling quill-delta v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/lib.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attributes`
[INFO] [stdout]   --> src/lib.rs:40:55
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]   --> src/lib.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]   --> src/lib.rs:48:29
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attributes`
[INFO] [stdout]   --> src/lib.rs:48:44
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/lib.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[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/lib.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn delete(mut self, length: usize) -> Self {
[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/lib.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[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/lib.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[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/lib.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn chop(mut self) {}
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.90s
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "859b4b24f91065f68e60ecbfdd4d61f437b4db434fb0b5ebc69b5ffb1650a3c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859b4b24f91065f68e60ecbfdd4d61f437b4db434fb0b5ebc69b5ffb1650a3c2", kill_on_drop: false }`
[INFO] [stdout] 859b4b24f91065f68e60ecbfdd4d61f437b4db434fb0b5ebc69b5ffb1650a3c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 274d867802029257b7d0c70fb63f7a77ae585a77c70f4d5aeae866b372f1efff
[INFO] running `Command { std: "docker" "start" "-a" "274d867802029257b7d0c70fb63f7a77ae585a77c70f4d5aeae866b372f1efff", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/lib.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attributes`
[INFO] [stdout]   --> src/lib.rs:40:55
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]   --> src/lib.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quill-delta v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]   --> src/lib.rs:48:29
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attributes`
[INFO] [stdout]   --> src/lib.rs:48:44
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/lib.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[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/lib.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn delete(mut self, length: usize) -> Self {
[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/lib.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[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/lib.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[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/lib.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn chop(mut self) {}
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lib.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let op: DeltaOperation = serde_json::from_str(r#"{ "insert": "Hallo" }"#).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lib.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let op: DeltaOperation = serde_json::from_str(r#"{ "retain": 10 }"#).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lib.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let op: DeltaOperation = serde_json::from_str(r#"{ "delete": 10 }"#).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/lib.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attributes`
[INFO] [stdout]   --> src/lib.rs:40:55
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]   --> src/lib.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]   --> src/lib.rs:48:29
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attributes`
[INFO] [stdout]   --> src/lib.rs:48:44
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/lib.rs:52:27
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[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/lib.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn delete(mut self, length: usize) -> Self {
[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/lib.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[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/lib.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[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/lib.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn chop(mut self) {}
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "274d867802029257b7d0c70fb63f7a77ae585a77c70f4d5aeae866b372f1efff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "274d867802029257b7d0c70fb63f7a77ae585a77c70f4d5aeae866b372f1efff", kill_on_drop: false }`
[INFO] [stdout] 274d867802029257b7d0c70fb63f7a77ae585a77c70f4d5aeae866b372f1efff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1d67cdc652fd616ac37ba220c4fe89e6811c023229f25c1385ecbb71190706bf
[INFO] running `Command { std: "docker" "start" "-a" "1d67cdc652fd616ac37ba220c4fe89e6811c023229f25c1385ecbb71190706bf", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]   --> src/lib.rs:40:46
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attributes`
[INFO] [stderr]   --> src/lib.rs:40:55
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/lib.rs:44:29
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/lib.rs:48:29
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attributes`
[INFO] [stderr]   --> src/lib.rs:48:44
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/lib.rs:52:27
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stderr]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:40:36
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                    ----^^^^
[INFO] [stderr]    |                                    |
[INFO] [stderr]    |                                    help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:44:19
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stderr]    |                   ----^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:48:19
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stderr]    |                   ----^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn chop(mut self) {}
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/lib.rs:181:9
[INFO] [stderr]     |
[INFO] [stderr] 181 |     let op: DeltaOperation = serde_json::from_str(r#"{ "insert": "Hallo" }"#).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/lib.rs:182:9
[INFO] [stderr]     |
[INFO] [stderr] 182 |     let op: DeltaOperation = serde_json::from_str(r#"{ "retain": 10 }"#).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/lib.rs:183:9
[INFO] [stderr]     |
[INFO] [stderr] 183 |     let op: DeltaOperation = serde_json::from_str(r#"{ "delete": 10 }"#).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]   --> src/lib.rs:40:46
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attributes`
[INFO] [stderr]   --> src/lib.rs:40:55
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/lib.rs:44:29
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/lib.rs:48:29
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stderr]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attributes`
[INFO] [stderr]   --> src/lib.rs:48:44
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attributes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/lib.rs:52:27
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stderr]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:40:36
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn insert<S: Into<String>>(mut self, text: S, attributes: Attributes) -> Self {
[INFO] [stderr]    |                                    ----^^^^
[INFO] [stderr]    |                                    |
[INFO] [stderr]    |                                    help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:44:19
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn delete(mut self, length: usize) -> Self {
[INFO] [stderr]    |                   ----^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:48:19
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn retain(mut self, length: usize, attributes: Attributes) -> Self {
[INFO] [stderr]    |                   ----^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn push(mut self, op: DeltaOperation) -> Self {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn chop(mut self) {}
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/quill_delta-1fc8b45e0601a6e3)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test deserialize_delta_operation ... ok
[INFO] [stdout] test serilize_delta_operation ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quill-delta
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Delta (line 10) ... ok
[INFO] [stdout] test src/lib.rs - DeltaOperation::attr (line 131) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d67cdc652fd616ac37ba220c4fe89e6811c023229f25c1385ecbb71190706bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d67cdc652fd616ac37ba220c4fe89e6811c023229f25c1385ecbb71190706bf", kill_on_drop: false }`
[INFO] [stdout] 1d67cdc652fd616ac37ba220c4fe89e6811c023229f25c1385ecbb71190706bf
