[INFO] updating cached repository https://github.com/PurpleBooth/fizz-buzz-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e172c3db928c6569803e17b7de552b2e9a30b25f
[INFO] checking PurpleBooth/fizz-buzz-rust against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FPurpleBooth%2Ffizz-buzz-rust" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PurpleBooth/fizz-buzz-rust on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/PurpleBooth/fizz-buzz-rust
[INFO] finished tweaking git repo https://github.com/PurpleBooth/fizz-buzz-rust
[INFO] tweaked toml for git repo https://github.com/PurpleBooth/fizz-buzz-rust written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/PurpleBooth/fizz-buzz-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0732f356031796c96081282e454c91c42a8cba932cd83442d509a821bcbfdc6e
[INFO] running `"docker" "start" "-a" "0732f356031796c96081282e454c91c42a8cba932cd83442d509a821bcbfdc6e"`
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking iron-test v0.6.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking fizz-buzz-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.77s
[INFO] running `"docker" "inspect" "0732f356031796c96081282e454c91c42a8cba932cd83442d509a821bcbfdc6e"`
[INFO] running `"docker" "rm" "-f" "0732f356031796c96081282e454c91c42a8cba932cd83442d509a821bcbfdc6e"`
[INFO] [stdout] 0732f356031796c96081282e454c91c42a8cba932cd83442d509a821bcbfdc6e