[INFO] updating cached repository https://github.com/ilsko/femto
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c08ece02c4273a6002d5f92b49233d8661e64df
[INFO] testing ilsko/femto against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filsko%2Ffemto" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ilsko/femto on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ilsko/femto
[INFO] finished tweaking git repo https://github.com/ilsko/femto
[INFO] tweaked toml for git repo https://github.com/ilsko/femto written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ilsko/femto already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2d0ad91b58ff5c5a017bb069f211df0f735351af92032a044dd93ec54705a404
[INFO] running `"docker" "start" "-a" "2d0ad91b58ff5c5a017bb069f211df0f735351af92032a044dd93ec54705a404"`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling termion v1.5.2
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling structopt-derive v0.2.16
[INFO] [stderr]    Compiling structopt v0.2.16
[INFO] [stderr]    Compiling femto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.19s
[INFO] running `"docker" "inspect" "2d0ad91b58ff5c5a017bb069f211df0f735351af92032a044dd93ec54705a404"`
[INFO] running `"docker" "rm" "-f" "2d0ad91b58ff5c5a017bb069f211df0f735351af92032a044dd93ec54705a404"`
[INFO] [stdout] 2d0ad91b58ff5c5a017bb069f211df0f735351af92032a044dd93ec54705a404
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ba3f32e6101c64c46991e5160fdfbfbadfe802be4d40174584fab3d19d1c041
[INFO] running `"docker" "start" "-a" "2ba3f32e6101c64c46991e5160fdfbfbadfe802be4d40174584fab3d19d1c041"`
[INFO] [stderr]    Compiling femto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "2ba3f32e6101c64c46991e5160fdfbfbadfe802be4d40174584fab3d19d1c041"`
[INFO] running `"docker" "rm" "-f" "2ba3f32e6101c64c46991e5160fdfbfbadfe802be4d40174584fab3d19d1c041"`
[INFO] [stdout] 2ba3f32e6101c64c46991e5160fdfbfbadfe802be4d40174584fab3d19d1c041
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stdout] 04d48688dd07caa64dd20f71dec5eb2f718a0d8d5ad02eb5b4b65d108eca088f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "04d48688dd07caa64dd20f71dec5eb2f718a0d8d5ad02eb5b4b65d108eca088f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/text_buffer.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `file`
[INFO] [stderr]  --> src/text_buffer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     file: File,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]  --> src/text_buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     data: Vec<Segment>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(path: Option<PathBuf>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/text_buffer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/text_buffer.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn add(&mut self, index: usize, character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/text_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn remove(&mut self, index: usize) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `modify`
[INFO] [stderr]   --> src/text_buffer.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn modify(&mut self, index: usize, new_character: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stdin`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     stdin: R,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/femto-6eeb5c9728ec67e9
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/femto-1c7000e1fc9dc0ff
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests femto
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "04d48688dd07caa64dd20f71dec5eb2f718a0d8d5ad02eb5b4b65d108eca088f"`
[INFO] running `"docker" "rm" "-f" "04d48688dd07caa64dd20f71dec5eb2f718a0d8d5ad02eb5b4b65d108eca088f"`
[INFO] [stdout] 04d48688dd07caa64dd20f71dec5eb2f718a0d8d5ad02eb5b4b65d108eca088f