[INFO] fetching crate char_reader 0.1.0...
[INFO] testing char_reader-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate char_reader 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate char_reader 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate char_reader 0.1.0
[INFO] finished tweaking crates.io crate char_reader 0.1.0
[INFO] tweaked toml for crates.io crate char_reader 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2ffd6ee98c6a35ff49d787c50c33bc5919d9b6fc4404a3aab1a069d86c7d3b8
[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" "f2ffd6ee98c6a35ff49d787c50c33bc5919d9b6fc4404a3aab1a069d86c7d3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2ffd6ee98c6a35ff49d787c50c33bc5919d9b6fc4404a3aab1a069d86c7d3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ffd6ee98c6a35ff49d787c50c33bc5919d9b6fc4404a3aab1a069d86c7d3b8", kill_on_drop: false }`
[INFO] [stdout] f2ffd6ee98c6a35ff49d787c50c33bc5919d9b6fc4404a3aab1a069d86c7d3b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2122968fe0b14ac575b0660bbece403a05a4f1e3d5a773587f4206e5f1f98773
[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" "2122968fe0b14ac575b0660bbece403a05a4f1e3d5a773587f4206e5f1f98773", kill_on_drop: false }`
[INFO] [stderr]    Compiling char_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "2122968fe0b14ac575b0660bbece403a05a4f1e3d5a773587f4206e5f1f98773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2122968fe0b14ac575b0660bbece403a05a4f1e3d5a773587f4206e5f1f98773", kill_on_drop: false }`
[INFO] [stdout] 2122968fe0b14ac575b0660bbece403a05a4f1e3d5a773587f4206e5f1f98773
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "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] 8e3811aeb784b63d737becc90f02556977fce67d67af133152c345e7cc9b5ace
[INFO] running `Command { std: "docker" "start" "-a" "8e3811aeb784b63d737becc90f02556977fce67d67af133152c345e7cc9b5ace", kill_on_drop: false }`
[INFO] [stderr]    Compiling char_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "8e3811aeb784b63d737becc90f02556977fce67d67af133152c345e7cc9b5ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e3811aeb784b63d737becc90f02556977fce67d67af133152c345e7cc9b5ace", kill_on_drop: false }`
[INFO] [stdout] 8e3811aeb784b63d737becc90f02556977fce67d67af133152c345e7cc9b5ace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b4d2c606048e78adfd8e4146f1e31a34666ca68c51f7c4564ef8f1f35f0e5882
[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" "b4d2c606048e78adfd8e4146f1e31a34666ca68c51f7c4564ef8f1f35f0e5882", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/char_reader-aa797874246c5597
[INFO] [stdout] test tests::test_chars ... ok
[INFO] [stderr]    Doc-tests char_reader
[INFO] [stdout] test tests::test_lines ... ok
[INFO] [stdout] test tests::test_thresholds ... ok
[INFO] [stdout] test tests::check_utf8_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b4d2c606048e78adfd8e4146f1e31a34666ca68c51f7c4564ef8f1f35f0e5882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4d2c606048e78adfd8e4146f1e31a34666ca68c51f7c4564ef8f1f35f0e5882", kill_on_drop: false }`
[INFO] [stdout] b4d2c606048e78adfd8e4146f1e31a34666ca68c51f7c4564ef8f1f35f0e5882