[INFO] fetching crate samplr 0.1.0...
[INFO] testing samplr-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate samplr 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate samplr 0.1.0
[INFO] finished tweaking crates.io crate samplr 0.1.0
[INFO] tweaked toml for crates.io crate samplr 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate samplr 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate samplr 0.1.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test-case v1.2.1
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.32
[INFO] [stderr]   Downloaded libc v0.2.107
[INFO] [stderr]   Downloaded syn v1.0.81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9bed15a0a7b44a40afb8c031895b56d2bdff7afb268f75c9ffa9857537895d5
[INFO] running `Command { std: "docker" "start" "-a" "e9bed15a0a7b44a40afb8c031895b56d2bdff7afb268f75c9ffa9857537895d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9bed15a0a7b44a40afb8c031895b56d2bdff7afb268f75c9ffa9857537895d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9bed15a0a7b44a40afb8c031895b56d2bdff7afb268f75c9ffa9857537895d5", kill_on_drop: false }`
[INFO] [stdout] e9bed15a0a7b44a40afb8c031895b56d2bdff7afb268f75c9ffa9857537895d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2810a4d0ee5da34ab22169733960ab906eefc045ddc5be466da1e2033367cc77
[INFO] running `Command { std: "docker" "start" "-a" "2810a4d0ee5da34ab22169733960ab906eefc045ddc5be466da1e2033367cc77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling samplr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.12s
[INFO] running `Command { std: "docker" "inspect" "2810a4d0ee5da34ab22169733960ab906eefc045ddc5be466da1e2033367cc77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2810a4d0ee5da34ab22169733960ab906eefc045ddc5be466da1e2033367cc77", kill_on_drop: false }`
[INFO] [stdout] 2810a4d0ee5da34ab22169733960ab906eefc045ddc5be466da1e2033367cc77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcbb7dedff2770628833cb939c73d92e39d7569433f322694c55306db113d625
[INFO] running `Command { std: "docker" "start" "-a" "fcbb7dedff2770628833cb939c73d92e39d7569433f322694c55306db113d625", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling test-case v1.2.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling rand_distr v0.4.2
[INFO] [stderr]    Compiling samplr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `Command { std: "docker" "inspect" "fcbb7dedff2770628833cb939c73d92e39d7569433f322694c55306db113d625", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcbb7dedff2770628833cb939c73d92e39d7569433f322694c55306db113d625", kill_on_drop: false }`
[INFO] [stdout] fcbb7dedff2770628833cb939c73d92e39d7569433f322694c55306db113d625
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1f43c12dd43aa7d9bf4d53d4877fb019d2ea06676bd25a3305d5a190eddf8dc9
[INFO] running `Command { std: "docker" "start" "-a" "1f43c12dd43aa7d9bf4d53d4877fb019d2ea06676bd25a3305d5a190eddf8dc9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/samplr-1755058f26e76b46)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::sample_is_pop_when_pop_size_less_than_sample_size ... ok
[INFO] [stdout] test tests::seed_deterministic_samples ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/samplr-39f1c44bdd7e9ba3)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::inputs::implicit_stdin ... ok
[INFO] [stdout] test tests::inputs::multiple_files ... ok
[INFO] [stdout] test tests::inputs::multiple_files_and_stdin ... ok
[INFO] [stdout] test tests::sample_size::long ... ok
[INFO] [stdout] test tests::sample_size::default ... ok
[INFO] [stdout] test tests::inputs::explicit_stdin ... ok
[INFO] [stdout] test tests::inputs::single_file ... ok
[INFO] [stdout] test tests::seed::default ... ok
[INFO] [stdout] test tests::seed::long ... ok
[INFO] [stdout] test tests::sample_size::short ... ok
[INFO] [stderr]    Doc-tests samplr
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1f43c12dd43aa7d9bf4d53d4877fb019d2ea06676bd25a3305d5a190eddf8dc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f43c12dd43aa7d9bf4d53d4877fb019d2ea06676bd25a3305d5a190eddf8dc9", kill_on_drop: false }`
[INFO] [stdout] 1f43c12dd43aa7d9bf4d53d4877fb019d2ea06676bd25a3305d5a190eddf8dc9