[INFO] fetching crate varint 0.9.0...
[INFO] testing varint-0.9.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate varint 0.9.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate varint 0.9.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varint 0.9.0
[INFO] finished tweaking crates.io crate varint 0.9.0
[INFO] tweaked toml for crates.io crate varint 0.9.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3b32ce01a5b3c40e2136d13e84da4a15ff77a7abe28a8c3661336c8f2d60ed6
[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" "c3b32ce01a5b3c40e2136d13e84da4a15ff77a7abe28a8c3661336c8f2d60ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3b32ce01a5b3c40e2136d13e84da4a15ff77a7abe28a8c3661336c8f2d60ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3b32ce01a5b3c40e2136d13e84da4a15ff77a7abe28a8c3661336c8f2d60ed6", kill_on_drop: false }`
[INFO] [stdout] c3b32ce01a5b3c40e2136d13e84da4a15ff77a7abe28a8c3661336c8f2d60ed6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60bb023dc7ff35518adea07bf80ce68537dd6f401a885a50108aa1bfbf7e9d6b
[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" "60bb023dc7ff35518adea07bf80ce68537dd6f401a885a50108aa1bfbf7e9d6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_utils v0.1.1
[INFO] [stderr]    Compiling varint v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `next_byte` is never read
[INFO] [stdout]   --> src/rawio.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut next_byte: u8 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "60bb023dc7ff35518adea07bf80ce68537dd6f401a885a50108aa1bfbf7e9d6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60bb023dc7ff35518adea07bf80ce68537dd6f401a885a50108aa1bfbf7e9d6b", kill_on_drop: false }`
[INFO] [stdout] 60bb023dc7ff35518adea07bf80ce68537dd6f401a885a50108aa1bfbf7e9d6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93ac6d91e735f78a7c17ade5b6eb77ce75157bb25dfd4aece31fd07e7d2db05a
[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" "93ac6d91e735f78a7c17ade5b6eb77ce75157bb25dfd4aece31fd07e7d2db05a", kill_on_drop: false }`
[INFO] [stderr]    Compiling varint v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `next_byte` is never read
[INFO] [stdout]   --> src/rawio.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut next_byte: u8 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_byte` is never read
[INFO] [stdout]   --> src/rawio.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut next_byte: u8 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "93ac6d91e735f78a7c17ade5b6eb77ce75157bb25dfd4aece31fd07e7d2db05a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93ac6d91e735f78a7c17ade5b6eb77ce75157bb25dfd4aece31fd07e7d2db05a", kill_on_drop: false }`
[INFO] [stdout] 93ac6d91e735f78a7c17ade5b6eb77ce75157bb25dfd4aece31fd07e7d2db05a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc3304b4ed18d432a4a11c31f5f763fcba85d768b9341f04ec3a39783803ec84
[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" "dc3304b4ed18d432a4a11c31f5f763fcba85d768b9341f04ec3a39783803ec84", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `next_byte` is never read
[INFO] [stderr]   --> src/rawio.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let mut next_byte: u8 = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `next_byte` is never read
[INFO] [stderr]   --> src/rawio.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let mut next_byte: u8 = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/varint-d6967463d784e6f1
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test zigzag::tests::test_u8_i8_zigzag ... ok
[INFO] [stdout] test rawio::test::test_read_write_signed_varint_32 ... ok
[INFO] [stdout] test zigzag::tests::test_u32_i32_zigzag ... ok
[INFO] [stdout] test zigzag::tests::test_u16_i16_zigzag ... ok
[INFO] [stdout] test rawio::test::test_read_write_unsigned_varint_32 ... ok
[INFO] [stdout] test zigzag::tests::test_u64_i64_zigzag ... ok
[INFO] [stderr]    Doc-tests varint
[INFO] [stdout] test rawio::test::test_read_write_lots_of_unsigned_varint_32 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 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" "dc3304b4ed18d432a4a11c31f5f763fcba85d768b9341f04ec3a39783803ec84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc3304b4ed18d432a4a11c31f5f763fcba85d768b9341f04ec3a39783803ec84", kill_on_drop: false }`
[INFO] [stdout] dc3304b4ed18d432a4a11c31f5f763fcba85d768b9341f04ec3a39783803ec84
