[INFO] cloning repository https://github.com/garlic0x1/cipher-puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/garlic0x1/cipher-puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarlic0x1%2Fcipher-puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarlic0x1%2Fcipher-puzzle'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/garlic0x1/cipher-puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/garlic0x1/cipher-puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarlic0x1%2Fcipher-puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarlic0x1%2Fcipher-puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bc07da5965e0c9aa92fc1c70d1d605a4c4d2a97
[INFO] checking garlic0x1/cipher-puzzle against try#f17e3a389e192f83fe27a581774a9d1dbb8e565b for pr-137394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarlic0x1%2Fcipher-puzzle" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garlic0x1/cipher-puzzle on toolchain f17e3a389e192f83fe27a581774a9d1dbb8e565b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garlic0x1/cipher-puzzle
[INFO] finished tweaking git repo https://github.com/garlic0x1/cipher-puzzle
[INFO] tweaked toml for git repo https://github.com/garlic0x1/cipher-puzzle written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/garlic0x1/cipher-puzzle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/ccd7d71894fc9c1364c95a9f9ad09df9c75f727aef5442a92fbd55875d27cc10-init/work: no space left on device
[INFO] checking garlic0x1/cipher-puzzle against try#f17e3a389e192f83fe27a581774a9d1dbb8e565b for pr-137394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarlic0x1%2Fcipher-puzzle" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garlic0x1/cipher-puzzle on toolchain f17e3a389e192f83fe27a581774a9d1dbb8e565b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garlic0x1/cipher-puzzle
[INFO] finished tweaking git repo https://github.com/garlic0x1/cipher-puzzle
[INFO] tweaked toml for git repo https://github.com/garlic0x1/cipher-puzzle written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/garlic0x1/cipher-puzzle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43eb92dd61f7980e323289ed90e31141f274526a3c8c79979fb854536a1dc2bb
[INFO] running `Command { std: "docker" "start" "-a" "43eb92dd61f7980e323289ed90e31141f274526a3c8c79979fb854536a1dc2bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43eb92dd61f7980e323289ed90e31141f274526a3c8c79979fb854536a1dc2bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43eb92dd61f7980e323289ed90e31141f274526a3c8c79979fb854536a1dc2bb", kill_on_drop: false }`
[INFO] [stdout] 43eb92dd61f7980e323289ed90e31141f274526a3c8c79979fb854536a1dc2bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30a61f78af7cb0055d934dfe39fb421b9462235489ee816d0128d2b0d9ce8f81
[INFO] running `Command { std: "docker" "start" "-a" "30a61f78af7cb0055d934dfe39fb421b9462235489ee816d0128d2b0d9ce8f81", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking cipher-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `nth` is never read
[INFO] [stdout]   --> src/game.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut nth: char = '$';
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nth` is never read
[INFO] [stdout]   --> src/game.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let mut nth: char = '$';
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         stdout.read_char();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let _ = stdout.read_char();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 stdout.read_char();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 let _ = stdout.read_char();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:144:17
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 stdout.read_char();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let _ = stdout.read_char();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nth` is never read
[INFO] [stdout]   --> src/game.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut nth: char = '$';
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nth` is never read
[INFO] [stdout]   --> src/game.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let mut nth: char = '$';
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         stdout.read_char();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let _ = stdout.read_char();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 stdout.read_char();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 let _ = stdout.read_char();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:144:17
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 stdout.read_char();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let _ = stdout.read_char();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "30a61f78af7cb0055d934dfe39fb421b9462235489ee816d0128d2b0d9ce8f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a61f78af7cb0055d934dfe39fb421b9462235489ee816d0128d2b0d9ce8f81", kill_on_drop: false }`
[INFO] [stdout] 30a61f78af7cb0055d934dfe39fb421b9462235489ee816d0128d2b0d9ce8f81