[INFO] cloning 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" "clone" "--bare" "https://github.com/tallboy/rusty-tin-foil" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallboy%2Frusty-tin-foil", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallboy%2Frusty-tin-foil'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0666af491689239f405eed45b74e4bba702d5b11
[INFO] testing tallboy/rusty-tin-foil against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftallboy%2Frusty-tin-foil" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tallboy/rusty-tin-foil on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-7/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d99da20f50ac23490e94330c2afd55f90d9e2df6222adc6072a653330dbbdfcb
[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" "d99da20f50ac23490e94330c2afd55f90d9e2df6222adc6072a653330dbbdfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d99da20f50ac23490e94330c2afd55f90d9e2df6222adc6072a653330dbbdfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d99da20f50ac23490e94330c2afd55f90d9e2df6222adc6072a653330dbbdfcb", kill_on_drop: false }`
[INFO] [stdout] d99da20f50ac23490e94330c2afd55f90d9e2df6222adc6072a653330dbbdfcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", 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] 0c5f768ddf77f0a34f05a0731ec379a7417f72d8d56fddad09542108e01cea91
[INFO] running `Command { std: "docker" "start" "-a" "0c5f768ddf77f0a34f05a0731ec379a7417f72d8d56fddad09542108e01cea91", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.15s
[INFO] running `Command { std: "docker" "inspect" "0c5f768ddf77f0a34f05a0731ec379a7417f72d8d56fddad09542108e01cea91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c5f768ddf77f0a34f05a0731ec379a7417f72d8d56fddad09542108e01cea91", kill_on_drop: false }`
[INFO] [stdout] 0c5f768ddf77f0a34f05a0731ec379a7417f72d8d56fddad09542108e01cea91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 511c40b761dc34c4575de6a812b58d7a11b9f8c14e22c3f70c53be1b8d384876
[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" "511c40b761dc34c4575de6a812b58d7a11b9f8c14e22c3f70c53be1b8d384876", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "511c40b761dc34c4575de6a812b58d7a11b9f8c14e22c3f70c53be1b8d384876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "511c40b761dc34c4575de6a812b58d7a11b9f8c14e22c3f70c53be1b8d384876", kill_on_drop: false }`
[INFO] [stdout] 511c40b761dc34c4575de6a812b58d7a11b9f8c14e22c3f70c53be1b8d384876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a38e733089e89fe0d12d1f5ad899f942387dec2b3e19e15f93b6e7579694e1e9
[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" "a38e733089e89fe0d12d1f5ad899f942387dec2b3e19e15f93b6e7579694e1e9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused imports: `Standard`, `Uniform`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:2:41
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 2 | use rand::distributions::{Alphanumeric, Uniform, Standard};
[INFO] [stdout] 
[INFO] [stderr]   |                                         ^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty-tin-foil` (bin "rusty-tin-foil" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rusty_tin_foil-8ffb28745d463a1a)
[INFO] running `Command { std: "docker" "inspect" "a38e733089e89fe0d12d1f5ad899f942387dec2b3e19e15f93b6e7579694e1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38e733089e89fe0d12d1f5ad899f942387dec2b3e19e15f93b6e7579694e1e9", kill_on_drop: false }`
[INFO] [stdout] a38e733089e89fe0d12d1f5ad899f942387dec2b3e19e15f93b6e7579694e1e9