[INFO] cloning repository https://github.com/torkeldanielsson/japanese_commandline_trainer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/torkeldanielsson/japanese_commandline_trainer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Fjapanese_commandline_trainer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Fjapanese_commandline_trainer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cdd20358c69499b732dbff0b0926db563fee31d
[INFO] checking torkeldanielsson/japanese_commandline_trainer against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Fjapanese_commandline_trainer" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torkeldanielsson/japanese_commandline_trainer on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/torkeldanielsson/japanese_commandline_trainer
[INFO] finished tweaking git repo https://github.com/torkeldanielsson/japanese_commandline_trainer
[INFO] tweaked toml for git repo https://github.com/torkeldanielsson/japanese_commandline_trainer written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/torkeldanielsson/japanese_commandline_trainer 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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.66
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4787d77572defdc4b60bd1cbe82d7e969cb487c583b9e79b345a5f890612a7ca
[INFO] running `Command { std: "docker" "start" "-a" "4787d77572defdc4b60bd1cbe82d7e969cb487c583b9e79b345a5f890612a7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4787d77572defdc4b60bd1cbe82d7e969cb487c583b9e79b345a5f890612a7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4787d77572defdc4b60bd1cbe82d7e969cb487c583b9e79b345a5f890612a7ca", kill_on_drop: false }`
[INFO] [stdout] 4787d77572defdc4b60bd1cbe82d7e969cb487c583b9e79b345a5f890612a7ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f257861cb0243438e7634a86c7b470fcb626b91332183a87fa958bc338bea40d
[INFO] running `Command { std: "docker" "start" "-a" "f257861cb0243438e7634a86c7b470fcb626b91332183a87fa958bc338bea40d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hiragana v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kanji` and `english` are never read
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct SampleSentence {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 10 |     kanji: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     english: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SampleSentence` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `samples` is never read
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Word {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     samples: Vec<SampleSentence>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Word` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kanji` and `english` are never read
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct SampleSentence {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 10 |     kanji: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     english: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SampleSentence` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `samples` is never read
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Word {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     samples: Vec<SampleSentence>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Word` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `Command { std: "docker" "inspect" "f257861cb0243438e7634a86c7b470fcb626b91332183a87fa958bc338bea40d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f257861cb0243438e7634a86c7b470fcb626b91332183a87fa958bc338bea40d", kill_on_drop: false }`
[INFO] [stdout] f257861cb0243438e7634a86c7b470fcb626b91332183a87fa958bc338bea40d
[INFO] checking torkeldanielsson/japanese_commandline_trainer against try#785364c7e5e0804473a3fddfb579798ea14e3493 for pr-114682-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Fjapanese_commandline_trainer" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torkeldanielsson/japanese_commandline_trainer on toolchain 785364c7e5e0804473a3fddfb579798ea14e3493
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/torkeldanielsson/japanese_commandline_trainer
[INFO] finished tweaking git repo https://github.com/torkeldanielsson/japanese_commandline_trainer
[INFO] tweaked toml for git repo https://github.com/torkeldanielsson/japanese_commandline_trainer written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/torkeldanielsson/japanese_commandline_trainer 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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89f37d2fc804fa65a6b2dfb5d178e2912ef5cc698fddc6ec2aa3edfd9c8bf16d
[INFO] running `Command { std: "docker" "start" "-a" "89f37d2fc804fa65a6b2dfb5d178e2912ef5cc698fddc6ec2aa3edfd9c8bf16d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89f37d2fc804fa65a6b2dfb5d178e2912ef5cc698fddc6ec2aa3edfd9c8bf16d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89f37d2fc804fa65a6b2dfb5d178e2912ef5cc698fddc6ec2aa3edfd9c8bf16d", kill_on_drop: false }`
[INFO] [stdout] 89f37d2fc804fa65a6b2dfb5d178e2912ef5cc698fddc6ec2aa3edfd9c8bf16d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48e50b1d53508d22c795813fc1fab762410b6709f742fba7dcfaea09e6b919bd
[INFO] running `Command { std: "docker" "start" "-a" "48e50b1d53508d22c795813fc1fab762410b6709f742fba7dcfaea09e6b919bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hiragana v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kanji` and `english` are never read
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct SampleSentence {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 10 |     kanji: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     english: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SampleSentence` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kanji` and `english` are never read
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct SampleSentence {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 10 |     kanji: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     english: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SampleSentence` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `samples` is never read
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Word {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     samples: Vec<SampleSentence>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Word` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `samples` is never read
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Word {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     samples: Vec<SampleSentence>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Word` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "48e50b1d53508d22c795813fc1fab762410b6709f742fba7dcfaea09e6b919bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e50b1d53508d22c795813fc1fab762410b6709f742fba7dcfaea09e6b919bd", kill_on_drop: false }`
[INFO] [stdout] 48e50b1d53508d22c795813fc1fab762410b6709f742fba7dcfaea09e6b919bd