[INFO] fetching crate failchain 0.1018.2...
[INFO] testing failchain-0.1018.2 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate failchain 0.1018.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate failchain 0.1018.2 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate failchain 0.1018.2
[INFO] finished tweaking crates.io crate failchain 0.1018.2
[INFO] tweaked toml for crates.io crate failchain 0.1018.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate failchain 0.1018.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19a782bc1f55c3b69ab660bf134ce5c8d9b8cc8b23d4824ac4cc05bd24af116c
[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" "19a782bc1f55c3b69ab660bf134ce5c8d9b8cc8b23d4824ac4cc05bd24af116c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a782bc1f55c3b69ab660bf134ce5c8d9b8cc8b23d4824ac4cc05bd24af116c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a782bc1f55c3b69ab660bf134ce5c8d9b8cc8b23d4824ac4cc05bd24af116c", kill_on_drop: false }`
[INFO] [stdout] 19a782bc1f55c3b69ab660bf134ce5c8d9b8cc8b23d4824ac4cc05bd24af116c
[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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bf1f525d6a67a71390b629a3c56c52468c93eb706e6a14e08efa1dcf4215a40
[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" "6bf1f525d6a67a71390b629a3c56c52468c93eb706e6a14e08efa1dcf4215a40", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling backtrace v0.3.56
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling failchain v0.1018.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.76s
[INFO] running `Command { std: "docker" "inspect" "6bf1f525d6a67a71390b629a3c56c52468c93eb706e6a14e08efa1dcf4215a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bf1f525d6a67a71390b629a3c56c52468c93eb706e6a14e08efa1dcf4215a40", kill_on_drop: false }`
[INFO] [stdout] 6bf1f525d6a67a71390b629a3c56c52468c93eb706e6a14e08efa1dcf4215a40
[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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3cd9e6ca840eb1e0760e3f7ca9bb779a376ed29b9d59d3d3ef62fe8b94c44a1
[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" "c3cd9e6ca840eb1e0760e3f7ca9bb779a376ed29b9d59d3d3ef62fe8b94c44a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling failchain v0.1018.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `wad_file`
[INFO] [stdout]   --> examples/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let wad_file = File::open(wad).chain_err(|| ErrorKind::WadIo(wad.to_owned()))?;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wad_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `metadata_file`
[INFO] [stdout]   --> examples/main.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let metadata_file = File::open(metadata)
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metadata_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Result`
[INFO] [stdout]   --> examples/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub type Result<T> = StdResult<T, Error>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MetadataIo`
[INFO] [stdout]   --> examples/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         MetadataIo(PathBuf),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CorruptMetadata`
[INFO] [stdout]   --> examples/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         CorruptMetadata(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WadIo`
[INFO] [stdout]   --> examples/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         WadIo(PathBuf),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CorruptWad`
[INFO] [stdout]   --> examples/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         CorruptWad(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `validate_metadata`
[INFO] [stdout]   --> examples/main.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn validate_metadata(path: &Path, metadata: &str) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `load`
[INFO] [stdout]   --> examples/main.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn load(wad: &Path, metadata: &Path) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "c3cd9e6ca840eb1e0760e3f7ca9bb779a376ed29b9d59d3d3ef62fe8b94c44a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3cd9e6ca840eb1e0760e3f7ca9bb779a376ed29b9d59d3d3ef62fe8b94c44a1", kill_on_drop: false }`
[INFO] [stdout] c3cd9e6ca840eb1e0760e3f7ca9bb779a376ed29b9d59d3d3ef62fe8b94c44a1
[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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e7eade462a86bcf3bef93a8cd4c0285da4c20a201f1e4217c1137c716ca21e22
[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" "e7eade462a86bcf3bef93a8cd4c0285da4c20a201f1e4217c1137c716ca21e22", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `wad_file`
[INFO] [stderr]   --> examples/main.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let wad_file = File::open(wad).chain_err(|| ErrorKind::WadIo(wad.to_owned()))?;
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wad_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metadata_file`
[INFO] [stderr]   --> examples/main.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let metadata_file = File::open(metadata)
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metadata_file`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> examples/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub type Result<T> = StdResult<T, Error>;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MetadataIo`
[INFO] [stderr]   --> examples/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         MetadataIo(PathBuf),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CorruptMetadata`
[INFO] [stderr]   --> examples/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         CorruptMetadata(String),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WadIo`
[INFO] [stderr]   --> examples/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         WadIo(PathBuf),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CorruptWad`
[INFO] [stderr]   --> examples/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         CorruptWad(String),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `validate_metadata`
[INFO] [stderr]   --> examples/main.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn validate_metadata(path: &Path, metadata: &str) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load`
[INFO] [stderr]   --> examples/main.rs:69:8
[INFO] [stderr]    |
[INFO] [stderr] 69 |     fn load(wad: &Path, metadata: &Path) -> Result<()> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/failchain-6bb853c4ac76c69a)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests failchain
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e7eade462a86bcf3bef93a8cd4c0285da4c20a201f1e4217c1137c716ca21e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7eade462a86bcf3bef93a8cd4c0285da4c20a201f1e4217c1137c716ca21e22", kill_on_drop: false }`
[INFO] [stdout] e7eade462a86bcf3bef93a8cd4c0285da4c20a201f1e4217c1137c716ca21e22