[INFO] cloning repository https://github.com/blueWhale903/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blueWhale903/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FblueWhale903%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FblueWhale903%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a12a873b86112aec6c32eef49dc066a7c6dcda9
[INFO] testing blueWhale903/learning-rust against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FblueWhale903%2Flearning-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blueWhale903/learning-rust on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blueWhale903/learning-rust
[INFO] finished tweaking git repo https://github.com/blueWhale903/learning-rust
[INFO] tweaked toml for git repo https://github.com/blueWhale903/learning-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/blueWhale903/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] f6f7dd6bd7f50f8dda43aa9fb243c415fba4b2a05fc874f516b10ae657a5a13c
[INFO] running `Command { std: "docker" "start" "-a" "f6f7dd6bd7f50f8dda43aa9fb243c415fba4b2a05fc874f516b10ae657a5a13c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6f7dd6bd7f50f8dda43aa9fb243c415fba4b2a05fc874f516b10ae657a5a13c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6f7dd6bd7f50f8dda43aa9fb243c415fba4b2a05fc874f516b10ae657a5a13c", kill_on_drop: false }`
[INFO] [stdout] f6f7dd6bd7f50f8dda43aa9fb243c415fba4b2a05fc874f516b10ae657a5a13c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--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] 6e1c61b56e028d04ddd185949dc1c3565a471008a5f07da3916497cb3b1c605b
[INFO] running `Command { std: "docker" "start" "-a" "6e1c61b56e028d04ddd185949dc1c3565a471008a5f07da3916497cb3b1c605b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `up` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     up,
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `Up`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `down` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     down,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Down`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `left` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     left,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `right` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     right
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]   --> src/if_let.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let mut input = String::from("");
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "6e1c61b56e028d04ddd185949dc1c3565a471008a5f07da3916497cb3b1c605b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1c61b56e028d04ddd185949dc1c3565a471008a5f07da3916497cb3b1c605b", kill_on_drop: false }`
[INFO] [stdout] 6e1c61b56e028d04ddd185949dc1c3565a471008a5f07da3916497cb3b1c605b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d9bdacc491d6a15c90c1cc199e64c1245ee6b4787c094e2468a2c500d071916
[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" "8d9bdacc491d6a15c90c1cc199e64c1245ee6b4787c094e2468a2c500d071916", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `up` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     up,
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `Up`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `down` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     down,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Down`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `left` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     left,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `right` should have an upper camel case name
[INFO] [stdout]  --> src/if_let.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     right
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]   --> src/if_let.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let mut input = String::from("");
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "8d9bdacc491d6a15c90c1cc199e64c1245ee6b4787c094e2468a2c500d071916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d9bdacc491d6a15c90c1cc199e64c1245ee6b4787c094e2468a2c500d071916", kill_on_drop: false }`
[INFO] [stdout] 8d9bdacc491d6a15c90c1cc199e64c1245ee6b4787c094e2468a2c500d071916
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e517b3d3b414fd3cc4975fc823b40115833d2141daa2b319adeb662419eb233c
[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" "e517b3d3b414fd3cc4975fc823b40115833d2141daa2b319adeb662419eb233c", kill_on_drop: false }`
[INFO] [stderr] warning: variant `up` should have an upper camel case name
[INFO] [stderr]  --> src/if_let.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     up,
[INFO] [stderr]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `Up`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `down` should have an upper camel case name
[INFO] [stderr]  --> src/if_let.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     down,
[INFO] [stderr]   |     ^^^^ help: convert the identifier to upper camel case: `Down`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `left` should have an upper camel case name
[INFO] [stderr]  --> src/if_let.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     left,
[INFO] [stderr]   |     ^^^^ help: convert the identifier to upper camel case: `Left`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `right` should have an upper camel case name
[INFO] [stderr]  --> src/if_let.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     right
[INFO] [stderr]   |     ^^^^^ help: convert the identifier to upper camel case: `Right`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `input` is never read
[INFO] [stderr]   --> src/if_let.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let mut input = String::from("");
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustlang-77c5dd4acf2cb1e1
[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 `Command { std: "docker" "inspect" "e517b3d3b414fd3cc4975fc823b40115833d2141daa2b319adeb662419eb233c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e517b3d3b414fd3cc4975fc823b40115833d2141daa2b319adeb662419eb233c", kill_on_drop: false }`
[INFO] [stdout] e517b3d3b414fd3cc4975fc823b40115833d2141daa2b319adeb662419eb233c