[INFO] cloning repository https://github.com/cantino/mcfly
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cantino/mcfly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcantino%2Fmcfly", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcantino%2Fmcfly'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0689b5a2238dae7942cddd1c92856a92ecd47587
[INFO] checking cantino/mcfly against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcantino%2Fmcfly" "/workspace/builds/worker-118/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-118/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cantino/mcfly on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cantino/mcfly
[INFO] finished tweaking git repo https://github.com/cantino/mcfly
[INFO] tweaked toml for git repo https://github.com/cantino/mcfly written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate git repo https://github.com/cantino/mcfly already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e203f1f4046fbd463856c043e4cb9cad86665b82ac8522833656db15d52bdebd
[INFO] running `Command { std: "docker" "start" "-a" "e203f1f4046fbd463856c043e4cb9cad86665b82ac8522833656db15d52bdebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e203f1f4046fbd463856c043e4cb9cad86665b82ac8522833656db15d52bdebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e203f1f4046fbd463856c043e4cb9cad86665b82ac8522833656db15d52bdebd", kill_on_drop: false }`
[INFO] [stdout] e203f1f4046fbd463856c043e4cb9cad86665b82ac8522833656db15d52bdebd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70d32f0e0c9cbdb486f828ae6af98c9c325f60b328d9fa93adec3441f92e2ca4
[INFO] running `Command { std: "docker" "start" "-a" "70d32f0e0c9cbdb486f828ae6af98c9c325f60b328d9fa93adec3441f92e2ca4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking relative-path v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.10.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking shellexpand v2.0.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rusqlite v0.15.0
[INFO] [stderr]     Checking mcfly v0.5.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `settings`
[INFO] [stdout]   --> src/training_sample_generator.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     settings: &'a Settings,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `history`
[INFO] [stdout]   --> src/training_sample_generator.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     history: &'a History,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `settings`
[INFO] [stdout]   --> src/training_sample_generator.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     settings: &'a Settings,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `history`
[INFO] [stdout]   --> src/training_sample_generator.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     history: &'a History,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[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 1m 16s
[INFO] running `Command { std: "docker" "inspect" "70d32f0e0c9cbdb486f828ae6af98c9c325f60b328d9fa93adec3441f92e2ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d32f0e0c9cbdb486f828ae6af98c9c325f60b328d9fa93adec3441f92e2ca4", kill_on_drop: false }`
[INFO] [stdout] 70d32f0e0c9cbdb486f828ae6af98c9c325f60b328d9fa93adec3441f92e2ca4