[INFO] updating cached repository https://github.com/tallboy/rusty-tin-foil
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0666af491689239f405eed45b74e4bba702d5b11
[INFO] checking tallboy/rusty-tin-foil against try#22dd2dd1dc07f63ae9394352d412f020d2985684 for pr-74627
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallboy%2Frusty-tin-foil" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tallboy/rusty-tin-foil on toolchain 22dd2dd1dc07f63ae9394352d412f020d2985684
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tallboy/rusty-tin-foil
[INFO] finished tweaking git repo https://github.com/tallboy/rusty-tin-foil
[INFO] tweaked toml for git repo https://github.com/tallboy/rusty-tin-foil written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tallboy/rusty-tin-foil already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 881ae1bee3b01c7fc4c9decadc4b0436f10456c4db2f00c5fc6aba890c45ab16
[INFO] running `Command { std: "docker" "start" "-a" "881ae1bee3b01c7fc4c9decadc4b0436f10456c4db2f00c5fc6aba890c45ab16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "881ae1bee3b01c7fc4c9decadc4b0436f10456c4db2f00c5fc6aba890c45ab16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "881ae1bee3b01c7fc4c9decadc4b0436f10456c4db2f00c5fc6aba890c45ab16", kill_on_drop: false }`
[INFO] [stdout] 881ae1bee3b01c7fc4c9decadc4b0436f10456c4db2f00c5fc6aba890c45ab16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01d24b39fb34d3a82e745bfa77cc2b918321ebebf3b072468a28ff12a53ec883
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "01d24b39fb34d3a82e745bfa77cc2b918321ebebf3b072468a28ff12a53ec883", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rusty-tin-foil v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Standard`, `Uniform`
[INFO] [stdout]  --> src/main.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::distributions::{Alphanumeric, Uniform, Standard};
[INFO] [stdout]   |                                         ^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Standard`, `Uniform`
[INFO] [stdout]  --> src/main.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::distributions::{Alphanumeric, Uniform, Standard};
[INFO] [stdout]   |                                         ^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
[INFO] running `Command { std: "docker" "inspect" "01d24b39fb34d3a82e745bfa77cc2b918321ebebf3b072468a28ff12a53ec883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01d24b39fb34d3a82e745bfa77cc2b918321ebebf3b072468a28ff12a53ec883", kill_on_drop: false }`
[INFO] [stdout] 01d24b39fb34d3a82e745bfa77cc2b918321ebebf3b072468a28ff12a53ec883