[INFO] updating cached repository eiko/turtle_shell
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/eiko/turtle_shell
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/eiko/turtle_shell" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/eiko/turtle_shell"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/eiko/turtle_shell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/eiko/turtle_shell" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/eiko/turtle_shell"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/eiko/turtle_shell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d69436563f9828dbb5d95779c799a91894bfb0f3
[INFO] sha for GitHub repo eiko/turtle_shell: d69436563f9828dbb5d95779c799a91894bfb0f3
[INFO] validating manifest of eiko/turtle_shell on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of eiko/turtle_shell on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing eiko/turtle_shell
[INFO] finished frobbing eiko/turtle_shell
[INFO] frobbed toml for eiko/turtle_shell written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/eiko/turtle_shell/Cargo.toml
[INFO] started frobbing eiko/turtle_shell
[INFO] finished frobbing eiko/turtle_shell
[INFO] frobbed toml for eiko/turtle_shell written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/eiko/turtle_shell/Cargo.toml
[INFO] crate eiko/turtle_shell has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing eiko/turtle_shell against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/eiko/turtle_shell:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 181190ee504258336ecfabc6c560a8a6702c331966ee6163ed7efc534b63c1fb
[INFO] running `"docker" "start" "-a" "181190ee504258336ecfabc6c560a8a6702c331966ee6163ed7efc534b63c1fb"`
[INFO] [stderr]    Compiling gdk-pixbuf v0.1.2
[INFO] [stderr]    Compiling cairo-rs v0.1.2
[INFO] [stderr]    Compiling gio v0.1.2
[INFO] [stderr]    Compiling gdk v0.5.2
[INFO] [stderr]    Compiling gtk v0.1.2
[INFO] [stderr]    Compiling gio-sys v0.3.3
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.3.3
[INFO] [stderr]    Compiling pango-sys v0.3.3
[INFO] [stderr]    Compiling cairo-sys-rs v0.3.3
[INFO] [stderr]    Compiling gdk-sys v0.3.3
[INFO] [stderr]    Compiling gtk-sys v0.3.3
[INFO] [stderr]    Compiling pango v0.1.2
[INFO] [stderr]    Compiling turtle_shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/core.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]    --> src/core.rs:173:19
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn ask(&self, params: Vec<String>) -> Result<String, String> {
[INFO] [stderr]     |                   ^^^^^^ help: consider prefixing with an underscore: `_params`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/turbin.rs:26:38
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn receive(&self, message: &str, mut params: Vec<String>) -> String {
[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: method is never used: `name`
[INFO] [stderr]  --> src/core.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn name(&self) -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load`
[INFO] [stderr]   --> src/core.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn load(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_plugin`
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn load_plugin(&mut self, plugin: &'a Plugin) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/core.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/core.rs:191:9
[INFO] [stderr]     |
[INFO] [stderr] 191 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/core.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.26s
[INFO] running `"docker" "inspect" "181190ee504258336ecfabc6c560a8a6702c331966ee6163ed7efc534b63c1fb"`
[INFO] running `"docker" "rm" "-f" "181190ee504258336ecfabc6c560a8a6702c331966ee6163ed7efc534b63c1fb"`
[INFO] [stdout] 181190ee504258336ecfabc6c560a8a6702c331966ee6163ed7efc534b63c1fb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/eiko/turtle_shell:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] a1ab3047c4cb76e0569350798155c40f2f75992a6f428a4aa96036edda75d914
[INFO] running `"docker" "start" "-a" "a1ab3047c4cb76e0569350798155c40f2f75992a6f428a4aa96036edda75d914"`
[INFO] [stderr]    Compiling turtle_shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/core.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]    --> src/core.rs:173:19
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn ask(&self, params: Vec<String>) -> Result<String, String> {
[INFO] [stderr]     |                   ^^^^^^ help: consider prefixing with an underscore: `_params`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/turbin.rs:26:38
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn receive(&self, message: &str, mut params: Vec<String>) -> String {
[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: method is never used: `name`
[INFO] [stderr]  --> src/core.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn name(&self) -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load`
[INFO] [stderr]   --> src/core.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn load(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_plugin`
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn load_plugin(&mut self, plugin: &'a Plugin) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/core.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/core.rs:191:9
[INFO] [stderr]     |
[INFO] [stderr] 191 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/core.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "a1ab3047c4cb76e0569350798155c40f2f75992a6f428a4aa96036edda75d914"`
[INFO] running `"docker" "rm" "-f" "a1ab3047c4cb76e0569350798155c40f2f75992a6f428a4aa96036edda75d914"`
[INFO] [stdout] a1ab3047c4cb76e0569350798155c40f2f75992a6f428a4aa96036edda75d914
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/eiko/turtle_shell:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] f8a4330e6fb596dc0bdd3bf7ef1dda9cc1719c4ea790cc47f74599b7bfd9d978
[INFO] running `"docker" "start" "-a" "f8a4330e6fb596dc0bdd3bf7ef1dda9cc1719c4ea790cc47f74599b7bfd9d978"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/turtle_shell-662548aaea9263c4
[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" "f8a4330e6fb596dc0bdd3bf7ef1dda9cc1719c4ea790cc47f74599b7bfd9d978"`
[INFO] running `"docker" "rm" "-f" "f8a4330e6fb596dc0bdd3bf7ef1dda9cc1719c4ea790cc47f74599b7bfd9d978"`
[INFO] [stdout] f8a4330e6fb596dc0bdd3bf7ef1dda9cc1719c4ea790cc47f74599b7bfd9d978