[INFO] fetching crate charred 0.3.3...
[INFO] testing charred-0.3.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate charred 0.3.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate charred 0.3.3 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 charred 0.3.3
[INFO] finished tweaking crates.io crate charred 0.3.3
[INFO] tweaked toml for crates.io crate charred 0.3.3 written to /workspace/builds/worker-0/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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 0a393b25e350482e631d8e7eb847dcd9723cbb3d4ed1ce41c896bac0149feb1f
[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" "0a393b25e350482e631d8e7eb847dcd9723cbb3d4ed1ce41c896bac0149feb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a393b25e350482e631d8e7eb847dcd9723cbb3d4ed1ce41c896bac0149feb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a393b25e350482e631d8e7eb847dcd9723cbb3d4ed1ce41c896bac0149feb1f", kill_on_drop: false }`
[INFO] [stdout] 0a393b25e350482e631d8e7eb847dcd9723cbb3d4ed1ce41c896bac0149feb1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5aa7c9abc51b5ae09078a3733d011d5b512ffcb6badac51811871fa6dc1e2935
[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" "5aa7c9abc51b5ae09078a3733d011d5b512ffcb6badac51811871fa6dc1e2935", kill_on_drop: false }`
[INFO] [stderr]    Compiling charred v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "5aa7c9abc51b5ae09078a3733d011d5b512ffcb6badac51811871fa6dc1e2935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aa7c9abc51b5ae09078a3733d011d5b512ffcb6badac51811871fa6dc1e2935", kill_on_drop: false }`
[INFO] [stdout] 5aa7c9abc51b5ae09078a3733d011d5b512ffcb6badac51811871fa6dc1e2935
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 72bff8e6996b4d7f3b1be6bd21ac6d2d0d70938fdd405bc1e7132ee3aec9c30b
[INFO] running `Command { std: "docker" "start" "-a" "72bff8e6996b4d7f3b1be6bd21ac6d2d0d70938fdd405bc1e7132ee3aec9c30b", kill_on_drop: false }`
[INFO] [stderr]    Compiling charred v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "72bff8e6996b4d7f3b1be6bd21ac6d2d0d70938fdd405bc1e7132ee3aec9c30b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72bff8e6996b4d7f3b1be6bd21ac6d2d0d70938fdd405bc1e7132ee3aec9c30b", kill_on_drop: false }`
[INFO] [stdout] 72bff8e6996b4d7f3b1be6bd21ac6d2d0d70938fdd405bc1e7132ee3aec9c30b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5541bc15d9b055a78257a20886011d84c1810bee184bf63004e26e58ea944fc8
[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" "5541bc15d9b055a78257a20886011d84c1810bee184bf63004e26e58ea944fc8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/charred-8a19d3a5941b7c82
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::it_asserts_chars ... ok
[INFO] [stdout] test tests::it_checks_eof ... ok
[INFO] [stdout] test tests::it_seeks ... ok
[INFO] [stdout] test tests::it_returns_the_next_char ... ok
[INFO] [stdout] test tests::it_rewinds ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests charred
[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" "5541bc15d9b055a78257a20886011d84c1810bee184bf63004e26e58ea944fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5541bc15d9b055a78257a20886011d84c1810bee184bf63004e26e58ea944fc8", kill_on_drop: false }`
[INFO] [stdout] 5541bc15d9b055a78257a20886011d84c1810bee184bf63004e26e58ea944fc8