[INFO] fetching crate buffered-reader 1.3.1...
[INFO] checking buffered-reader-1.3.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate buffered-reader 1.3.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate buffered-reader 1.3.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buffered-reader 1.3.1
[INFO] finished tweaking crates.io crate buffered-reader 1.3.1
[INFO] tweaked toml for crates.io crate buffered-reader 1.3.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e9b99428f1532956538ca23c2990eca91af28dfc1eaa31ee2a2ee8b12cd770f
[INFO] running `Command { std: "docker" "start" "-a" "2e9b99428f1532956538ca23c2990eca91af28dfc1eaa31ee2a2ee8b12cd770f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e9b99428f1532956538ca23c2990eca91af28dfc1eaa31ee2a2ee8b12cd770f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e9b99428f1532956538ca23c2990eca91af28dfc1eaa31ee2a2ee8b12cd770f", kill_on_drop: false }`
[INFO] [stdout] 2e9b99428f1532956538ca23c2990eca91af28dfc1eaa31ee2a2ee8b12cd770f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] def190a98f87b8871e51956e74d0f2816bf4c1000a8f164c7fecb2c9af4f067f
[INFO] running `Command { std: "docker" "start" "-a" "def190a98f87b8871e51956e74d0f2816bf4c1000a8f164c7fecb2c9af4f067f", kill_on_drop: false }`
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]    Compiling cc v1.1.15
[INFO] [stderr]     Checking flate2 v1.0.33
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking buffered-reader v1.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MyStruct` is never constructed
[INFO] [stdout]    --> src/macros.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub struct MyStruct {}
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WithLifetime` is never constructed
[INFO] [stdout]    --> src/macros.rs:139:16
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub struct WithLifetime<'a> { _p: std::marker::PhantomData<&'a ()> }
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyWriter` is never constructed
[INFO] [stdout]    --> src/macros.rs:144:16
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub struct MyWriter<W: std::io::Write> { _p: std::marker::PhantomData<W> }
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyWriterWithLifetime` is never constructed
[INFO] [stdout]    --> src/macros.rs:153:16
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub struct MyWriterWithLifetime<'a, C, W: std::io::Write> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "def190a98f87b8871e51956e74d0f2816bf4c1000a8f164c7fecb2c9af4f067f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "def190a98f87b8871e51956e74d0f2816bf4c1000a8f164c7fecb2c9af4f067f", kill_on_drop: false }`
[INFO] [stdout] def190a98f87b8871e51956e74d0f2816bf4c1000a8f164c7fecb2c9af4f067f