[INFO] cloning repository https://github.com/martindisch/probability
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/martindisch/probability" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartindisch%2Fprobability", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartindisch%2Fprobability'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 064386828a1764729885903b3ad9dd2d37a1bf89
[INFO] checking martindisch/probability against master#8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartindisch%2Fprobability" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/martindisch/probability on toolchain 8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/martindisch/probability
[INFO] finished tweaking git repo https://github.com/martindisch/probability
[INFO] tweaked toml for git repo https://github.com/martindisch/probability written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/martindisch/probability 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" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 715c1a352325b7804a313df763b23c5e46a3432c9972f95b3025ec4518390e96
[INFO] running `Command { std: "docker" "start" "-a" "715c1a352325b7804a313df763b23c5e46a3432c9972f95b3025ec4518390e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "715c1a352325b7804a313df763b23c5e46a3432c9972f95b3025ec4518390e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715c1a352325b7804a313df763b23c5e46a3432c9972f95b3025ec4518390e96", kill_on_drop: false }`
[INFO] [stdout] 715c1a352325b7804a313df763b23c5e46a3432c9972f95b3025ec4518390e96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9bdab2e17d88b0c94b482105939ecbf2beae191275d7ef043dcc12fbd63fcb8
[INFO] running `Command { std: "docker" "start" "-a" "e9bdab2e17d88b0c94b482105939ecbf2beae191275d7ef043dcc12fbd63fcb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking probability v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `strategy_name` and `average_cost` are never read
[INFO] [stdout]   --> src/booking.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct TestResult {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 55 |     strategy_name: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 56 |     average_cost: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `contestant_strategy` and `number_of_wins` are never read
[INFO] [stdout]   --> src/goat.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct TestResult {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 73 |     contestant_strategy: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 74 |     number_of_wins: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `strategy_name` and `average_cost` are never read
[INFO] [stdout]   --> src/booking.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct TestResult {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 55 |     strategy_name: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 56 |     average_cost: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `contestant_strategy` and `number_of_wins` are never read
[INFO] [stdout]   --> src/goat.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct TestResult {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 73 |     contestant_strategy: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 74 |     number_of_wins: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `Command { std: "docker" "inspect" "e9bdab2e17d88b0c94b482105939ecbf2beae191275d7ef043dcc12fbd63fcb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9bdab2e17d88b0c94b482105939ecbf2beae191275d7ef043dcc12fbd63fcb8", kill_on_drop: false }`
[INFO] [stdout] e9bdab2e17d88b0c94b482105939ecbf2beae191275d7ef043dcc12fbd63fcb8