[INFO] fetching crate circular 0.3.0...
[INFO] testing circular-0.3.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate circular 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate circular 0.3.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate circular 0.3.0
[INFO] finished tweaking crates.io crate circular 0.3.0
[INFO] tweaked toml for crates.io crate circular 0.3.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 43442de7f1b03244f46151251dafa38014400dab4965ccd0b27514869799c99b
[INFO] running `Command { std: "docker" "start" "-a" "43442de7f1b03244f46151251dafa38014400dab4965ccd0b27514869799c99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43442de7f1b03244f46151251dafa38014400dab4965ccd0b27514869799c99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43442de7f1b03244f46151251dafa38014400dab4965ccd0b27514869799c99b", kill_on_drop: false }`
[INFO] [stdout] 43442de7f1b03244f46151251dafa38014400dab4965ccd0b27514869799c99b
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a638fdacae9482f87bba93e9dc0595326bcc94f7c90e17e8fad0a9646a18bdc5
[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" "a638fdacae9482f87bba93e9dc0595326bcc94f7c90e17e8fad0a9646a18bdc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling circular v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "a638fdacae9482f87bba93e9dc0595326bcc94f7c90e17e8fad0a9646a18bdc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a638fdacae9482f87bba93e9dc0595326bcc94f7c90e17e8fad0a9646a18bdc5", kill_on_drop: false }`
[INFO] [stdout] a638fdacae9482f87bba93e9dc0595326bcc94f7c90e17e8fad0a9646a18bdc5
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] 76109ac04d01b02d69f8938ca7fe1d0cfa69409778beb3a2babaad97890d91b5
[INFO] running `Command { std: "docker" "start" "-a" "76109ac04d01b02d69f8938ca7fe1d0cfa69409778beb3a2babaad97890d91b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling circular v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]    --> src/lib.rs:397:7
[INFO] [stdout]     |
[INFO] [stdout] 397 |   use std::str;
[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 0.84s
[INFO] running `Command { std: "docker" "inspect" "76109ac04d01b02d69f8938ca7fe1d0cfa69409778beb3a2babaad97890d91b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76109ac04d01b02d69f8938ca7fe1d0cfa69409778beb3a2babaad97890d91b5", kill_on_drop: false }`
[INFO] [stdout] 76109ac04d01b02d69f8938ca7fe1d0cfa69409778beb3a2babaad97890d91b5
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 032ee61ee4a7b0659ad3cf6c4a628218a0a615b032eb3bc8df166d11bbc964ef
[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" "032ee61ee4a7b0659ad3cf6c4a628218a0a615b032eb3bc8df166d11bbc964ef", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]    --> src/lib.rs:397:7
[INFO] [stderr]     |
[INFO] [stderr] 397 |   use std::str;
[INFO] [stderr]     |       ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/circular-8ed96b70b64237be
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::consume_without_shift ... ok
[INFO] [stdout] test tests::set_position ... ok
[INFO] [stdout] test tests::delete ... ok
[INFO] [stderr]    Doc-tests circular
[INFO] [stdout] test tests::fill_and_consume ... ok
[INFO] [stdout] test tests::replace ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Buffer::position (line 173) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "032ee61ee4a7b0659ad3cf6c4a628218a0a615b032eb3bc8df166d11bbc964ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "032ee61ee4a7b0659ad3cf6c4a628218a0a615b032eb3bc8df166d11bbc964ef", kill_on_drop: false }`
[INFO] [stdout] 032ee61ee4a7b0659ad3cf6c4a628218a0a615b032eb3bc8df166d11bbc964ef