[INFO] fetching crate intervaltree 0.2.6...
[INFO] testing intervaltree-0.2.6 against 1.49.0 for beta-1.50-1
[INFO] extracting crate intervaltree 0.2.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate intervaltree 0.2.6 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 intervaltree 0.2.6
[INFO] finished tweaking crates.io crate intervaltree 0.2.6
[INFO] tweaked toml for crates.io crate intervaltree 0.2.6 written to /workspace/builds/worker-9/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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a1a4785dbf2d1a20a6137b40d8293f6fc0b3463c233460f56f304f3216b1b5d5
[INFO] running `Command { std: "docker" "start" "-a" "a1a4785dbf2d1a20a6137b40d8293f6fc0b3463c233460f56f304f3216b1b5d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1a4785dbf2d1a20a6137b40d8293f6fc0b3463c233460f56f304f3216b1b5d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a4785dbf2d1a20a6137b40d8293f6fc0b3463c233460f56f304f3216b1b5d5", kill_on_drop: false }`
[INFO] [stdout] a1a4785dbf2d1a20a6137b40d8293f6fc0b3463c233460f56f304f3216b1b5d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] c853bf2a3ee0f28ed1dfa8104c3a7e2268660f301fae8429c98039500704fb3e
[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" "c853bf2a3ee0f28ed1dfa8104c3a7e2268660f301fae8429c98039500704fb3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling intervaltree v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "c853bf2a3ee0f28ed1dfa8104c3a7e2268660f301fae8429c98039500704fb3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c853bf2a3ee0f28ed1dfa8104c3a7e2268660f301fae8429c98039500704fb3e", kill_on_drop: false }`
[INFO] [stdout] c853bf2a3ee0f28ed1dfa8104c3a7e2268660f301fae8429c98039500704fb3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 8a6341b53a565834172b1c10152676fe9eeafa733efdc1e7d4135c4a7fe192a0
[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" "8a6341b53a565834172b1c10152676fe9eeafa733efdc1e7d4135c4a7fe192a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling intervaltree v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "8a6341b53a565834172b1c10152676fe9eeafa733efdc1e7d4135c4a7fe192a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a6341b53a565834172b1c10152676fe9eeafa733efdc1e7d4135c4a7fe192a0", kill_on_drop: false }`
[INFO] [stdout] 8a6341b53a565834172b1c10152676fe9eeafa733efdc1e7d4135c4a7fe192a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 73e370dd172278baaeffb6bcbcf1ef5075ac90ab26ea29f38fc194814db85fcb
[INFO] running `Command { std: "docker" "start" "-a" "73e370dd172278baaeffb6bcbcf1ef5075ac90ab26ea29f38fc194814db85fcb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/intervaltree-cd9c3dbeea72717a
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::empty ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests intervaltree
[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" "73e370dd172278baaeffb6bcbcf1ef5075ac90ab26ea29f38fc194814db85fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73e370dd172278baaeffb6bcbcf1ef5075ac90ab26ea29f38fc194814db85fcb", kill_on_drop: false }`
[INFO] [stdout] 73e370dd172278baaeffb6bcbcf1ef5075ac90ab26ea29f38fc194814db85fcb