[INFO] fetching crate yash 0.1.0...
[INFO] testing yash-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate yash 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate yash 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yash 0.1.0
[INFO] finished tweaking crates.io crate yash 0.1.0
[INFO] tweaked toml for crates.io crate yash 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate yash 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", 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] 51185d70315d094184b255f596b9e39c71716a831abae64cad2c14d7e6254a93
[INFO] running `Command { std: "docker" "start" "-a" "51185d70315d094184b255f596b9e39c71716a831abae64cad2c14d7e6254a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51185d70315d094184b255f596b9e39c71716a831abae64cad2c14d7e6254a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51185d70315d094184b255f596b9e39c71716a831abae64cad2c14d7e6254a93", kill_on_drop: false }`
[INFO] [stdout] 51185d70315d094184b255f596b9e39c71716a831abae64cad2c14d7e6254a93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00abe9ce73115b5f35b5b2abe6aaf875a4880b73ef486867223d3154bb435244
[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" "00abe9ce73115b5f35b5b2abe6aaf875a4880b73ef486867223d3154bb435244", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling yash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/commands.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let afet = (15 - x.chars().count());
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `colored::ColoredString`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use colored::ColoredString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     loop {
[INFO] [stdout] 28 | |         let x = input_imp();
[INFO] [stdout] 29 | |         match &x[..] {
[INFO] [stdout] 30 | |             "help" => commands::help(&inst),
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         }
[INFO] [stdout] 36 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 37 |       commands::help(&inst);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/message.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         _ => {
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Info`
[INFO] [stdout]  --> src/message.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Info,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Warning`
[INFO] [stdout]  --> src/message.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Warning,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Success`
[INFO] [stdout]  --> src/message.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Success,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `info`
[INFO] [stdout]   --> src/message.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn info(msg: String) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `warn`
[INFO] [stdout]   --> src/message.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn warn(msg: String) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `success`
[INFO] [stdout]   --> src/message.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn success(msg: String) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `Command { std: "docker" "inspect" "00abe9ce73115b5f35b5b2abe6aaf875a4880b73ef486867223d3154bb435244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00abe9ce73115b5f35b5b2abe6aaf875a4880b73ef486867223d3154bb435244", kill_on_drop: false }`
[INFO] [stdout] 00abe9ce73115b5f35b5b2abe6aaf875a4880b73ef486867223d3154bb435244
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 2bf1da6625246bf2e3ac6d0451ca3db5714f4a07a5ac4d7a96f2296145c4b128
[INFO] running `Command { std: "docker" "start" "-a" "2bf1da6625246bf2e3ac6d0451ca3db5714f4a07a5ac4d7a96f2296145c4b128", kill_on_drop: false }`
[INFO] [stderr]    Compiling yash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/commands.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let afet = (15 - x.chars().count());
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `colored::ColoredString`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use colored::ColoredString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     loop {
[INFO] [stdout] 28 | |         let x = input_imp();
[INFO] [stdout] 29 | |         match &x[..] {
[INFO] [stdout] 30 | |             "help" => commands::help(&inst),
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         }
[INFO] [stdout] 36 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 37 |       commands::help(&inst);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/message.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         _ => {
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Info`
[INFO] [stdout]  --> src/message.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Info,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Warning`
[INFO] [stdout]  --> src/message.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Warning,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Success`
[INFO] [stdout]  --> src/message.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Success,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `info`
[INFO] [stdout]   --> src/message.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn info(msg: String) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `warn`
[INFO] [stdout]   --> src/message.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn warn(msg: String) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `success`
[INFO] [stdout]   --> src/message.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn success(msg: String) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "2bf1da6625246bf2e3ac6d0451ca3db5714f4a07a5ac4d7a96f2296145c4b128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bf1da6625246bf2e3ac6d0451ca3db5714f4a07a5ac4d7a96f2296145c4b128", kill_on_drop: false }`
[INFO] [stdout] 2bf1da6625246bf2e3ac6d0451ca3db5714f4a07a5ac4d7a96f2296145c4b128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", 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] e960ff3e9afe70acdaebebd4a4c10acc60a7373d5f530eafa5c2a35d29456b47
[INFO] running `Command { std: "docker" "start" "-a" "e960ff3e9afe70acdaebebd4a4c10acc60a7373d5f530eafa5c2a35d29456b47", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/commands.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let afet = (15 - x.chars().count());
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `colored::ColoredString`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use colored::ColoredString;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | /     loop {
[INFO] [stderr] 28 | |         let x = input_imp();
[INFO] [stderr] 29 | |         match &x[..] {
[INFO] [stderr] 30 | |             "help" => commands::help(&inst),
[INFO] [stderr] ...  |
[INFO] [stderr] 35 | |         }
[INFO] [stderr] 36 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 37 |       commands::help(&inst);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/message.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         _ => {
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Info`
[INFO] [stderr]  --> src/message.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Info,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Warning`
[INFO] [stderr]  --> src/message.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Warning,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Success`
[INFO] [stderr]  --> src/message.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Success,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `info`
[INFO] [stderr]   --> src/message.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn info(msg: String) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `warn`
[INFO] [stderr]   --> src/message.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn warn(msg: String) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `success`
[INFO] [stderr]   --> src/message.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn success(msg: String) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `yash` (bin "yash" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/yash-f775576212456294)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e960ff3e9afe70acdaebebd4a4c10acc60a7373d5f530eafa5c2a35d29456b47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e960ff3e9afe70acdaebebd4a4c10acc60a7373d5f530eafa5c2a35d29456b47", kill_on_drop: false }`
[INFO] [stdout] e960ff3e9afe70acdaebebd4a4c10acc60a7373d5f530eafa5c2a35d29456b47