[INFO] fetching crate signpost 0.1.0...
[INFO] testing signpost-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate signpost 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate signpost 0.1.0 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 signpost 0.1.0
[INFO] finished tweaking crates.io crate signpost 0.1.0
[INFO] tweaked toml for crates.io crate signpost 0.1.0 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 296cd15826eb33edf670645897bcf537b919b7f3ffc037b7720def2eccec4ca5
[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" "296cd15826eb33edf670645897bcf537b919b7f3ffc037b7720def2eccec4ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "296cd15826eb33edf670645897bcf537b919b7f3ffc037b7720def2eccec4ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "296cd15826eb33edf670645897bcf537b919b7f3ffc037b7720def2eccec4ca5", kill_on_drop: false }`
[INFO] [stdout] 296cd15826eb33edf670645897bcf537b919b7f3ffc037b7720def2eccec4ca5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2bd3ab59ce01aea7fefe898a83bb88f656ea05564c3036f9e3db6a30844f4f7d
[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" "2bd3ab59ce01aea7fefe898a83bb88f656ea05564c3036f9e3db6a30844f4f7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling signpost v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:73:14
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:75:23
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:77:14
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:77:25
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "2bd3ab59ce01aea7fefe898a83bb88f656ea05564c3036f9e3db6a30844f4f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd3ab59ce01aea7fefe898a83bb88f656ea05564c3036f9e3db6a30844f4f7d", kill_on_drop: false }`
[INFO] [stdout] 2bd3ab59ce01aea7fefe898a83bb88f656ea05564c3036f9e3db6a30844f4f7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b574fca2033d49422057d655950eafee7c45327d62a625f186d3d2fd56f92698
[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" "b574fca2033d49422057d655950eafee7c45327d62a625f186d3d2fd56f92698", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:73:14
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling signpost v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:75:23
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:77:14
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:77:25
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:73:14
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:75:23
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]   --> src/lib.rs:77:14
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib.rs:77:25
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "b574fca2033d49422057d655950eafee7c45327d62a625f186d3d2fd56f92698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b574fca2033d49422057d655950eafee7c45327d62a625f186d3d2fd56f92698", kill_on_drop: false }`
[INFO] [stdout] b574fca2033d49422057d655950eafee7c45327d62a625f186d3d2fd56f92698
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 5b3ce1a76ba9226c2dc06c836e4d435af5ae691cc16abdc2599358ecb1f97d2f
[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" "5b3ce1a76ba9226c2dc06c836e4d435af5ae691cc16abdc2599358ecb1f97d2f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/lib.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/lib.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib.rs:75:23
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/lib.rs:77:14
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/lib.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn start(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/lib.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib.rs:75:23
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn end(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]   --> src/lib.rs:77:14
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn trace(code: u32, args: &[usize; 4]) {}
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/signpost-d169ec1258aa2335
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests signpost
[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] [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" "5b3ce1a76ba9226c2dc06c836e4d435af5ae691cc16abdc2599358ecb1f97d2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b3ce1a76ba9226c2dc06c836e4d435af5ae691cc16abdc2599358ecb1f97d2f", kill_on_drop: false }`
[INFO] [stdout] 5b3ce1a76ba9226c2dc06c836e4d435af5ae691cc16abdc2599358ecb1f97d2f
