[INFO] fetching crate bpf-loader-lib 0.2.1...
[INFO] checking bpf-loader-lib-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate bpf-loader-lib 0.2.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate bpf-loader-lib 0.2.1
[INFO] finished tweaking crates.io crate bpf-loader-lib 0.2.1
[INFO] tweaked toml for crates.io crate bpf-loader-lib 0.2.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bpf-loader-lib 0.2.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 205 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.21.7 (available: v0.22.1)
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[INFO] [stderr]       Adding btfdump v0.0.2 (available: v0.0.4)
[INFO] [stderr]       Adding flexi_logger v0.25.6 (available: v0.31.7)
[INFO] [stderr]       Adding libbpf-rs v0.20.1 (available: v0.25.0)
[INFO] [stderr]       Adding object v0.11.0 (available: v0.37.3)
[INFO] [stderr]       Adding ouroboros v0.16.0 (available: v0.18.5)
[INFO] [stderr]       Adding perf-event-open-sys v4.0.0 (available: v5.0.0)
[INFO] [stderr]       Adding serde_with v2.3.3 (available: v3.15.1)
[INFO] [stderr]       Adding target-lexicon v0.11.2 (available: v0.13.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d35cdc4df33222293457f13ed85dc49652ed28fba87964af3835c3041027e896
[INFO] running `Command { std: "docker" "start" "-a" "d35cdc4df33222293457f13ed85dc49652ed28fba87964af3835c3041027e896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d35cdc4df33222293457f13ed85dc49652ed28fba87964af3835c3041027e896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d35cdc4df33222293457f13ed85dc49652ed28fba87964af3835c3041027e896", kill_on_drop: false }`
[INFO] [stdout] d35cdc4df33222293457f13ed85dc49652ed28fba87964af3835c3041027e896
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc92e286dc390f4abf09ca63216dda7592f5963ecc7aa15657819ec8859d8638
[INFO] running `Command { std: "docker" "start" "-a" "fc92e286dc390f4abf09ca63216dda7592f5963ecc7aa15657819ec8859d8638", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]     Checking plain v0.2.3
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[INFO] [stderr]    Compiling libbpf-sys v1.6.2+v1.6.2
[INFO] [stderr]     Checking string-interner v0.12.2
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[INFO] [stderr]     Checking num_enum v0.5.11
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[INFO] [stderr]     Checking serde_with v2.3.3
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[INFO] [stderr]     Checking bpf-loader-lib v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/skeleton/preload/attach/mod.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     BpfLink(Link),
[INFO] [stdout]    |     ------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 24 -     BpfLink(Link),
[INFO] [stdout] 24 +     BpfLink(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/skeleton/preload/attach/mod.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |     PerfEventAttachWithFd(Link, i32),
[INFO] [stdout]    |     --------------------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 27 -     PerfEventAttachWithFd(Link, i32),
[INFO] [stdout] 27 +     PerfEventAttachWithFd((), i32),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/skeleton/preload/section_loader.rs:38:27
[INFO] [stdout]     |
[INFO] [stdout]  38 |                   $bytes => TryInto::<$out_type>::try_into($num).map_err(|e| anyhow!("Overflow at variable {}: {}", $var_name, e))?
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |                       let bytes = decl_integer_conversions!(
[INFO] [stdout]     |  _________________________________-
[INFO] [stdout]  98 | |                         var.sz,
[INFO] [stdout]  99 | |                         num,
[INFO] [stdout] 100 | |                         var_type_decl.name,
[INFO] [stdout] ...   |
[INFO] [stdout] 104 | |                         (8, i64)
[INFO] [stdout] 105 | |                     );
[INFO] [stdout]     | |_____________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `decl_integer_conversions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/skeleton/preload/section_loader.rs:38:27
[INFO] [stdout]     |
[INFO] [stdout]  38 |                   $bytes => TryInto::<$out_type>::try_into($num).map_err(|e| anyhow!("Overflow at variable {}: {}", $var_name, e))?
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |                       let bytes = decl_integer_conversions!(
[INFO] [stdout]     |  _________________________________-
[INFO] [stdout] 112 | |                         var.sz,
[INFO] [stdout] 113 | |                         num,
[INFO] [stdout] 114 | |                         var_type_decl.name,
[INFO] [stdout] ...   |
[INFO] [stdout] 118 | |                         (8, u64)
[INFO] [stdout] 119 | |                     );
[INFO] [stdout]     | |_____________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `decl_integer_conversions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bpf-loader-lib` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/skeleton/preload/attach/mod.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     BpfLink(Link),
[INFO] [stdout]    |     ------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 24 -     BpfLink(Link),
[INFO] [stdout] 24 +     BpfLink(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/skeleton/preload/attach/mod.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |     PerfEventAttachWithFd(Link, i32),
[INFO] [stdout]    |     --------------------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 27 -     PerfEventAttachWithFd(Link, i32),
[INFO] [stdout] 27 +     PerfEventAttachWithFd((), i32),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/skeleton/preload/section_loader.rs:38:27
[INFO] [stdout]     |
[INFO] [stdout]  38 |                   $bytes => TryInto::<$out_type>::try_into($num).map_err(|e| anyhow!("Overflow at variable {}: {}", $var_name, e))?
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |                       let bytes = decl_integer_conversions!(
[INFO] [stdout]     |  _________________________________-
[INFO] [stdout]  98 | |                         var.sz,
[INFO] [stdout]  99 | |                         num,
[INFO] [stdout] 100 | |                         var_type_decl.name,
[INFO] [stdout] ...   |
[INFO] [stdout] 104 | |                         (8, i64)
[INFO] [stdout] 105 | |                     );
[INFO] [stdout]     | |_____________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `decl_integer_conversions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/skeleton/preload/section_loader.rs:38:27
[INFO] [stdout]     |
[INFO] [stdout]  38 |                   $bytes => TryInto::<$out_type>::try_into($num).map_err(|e| anyhow!("Overflow at variable {}: {}", $var_name, e))?
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |                       let bytes = decl_integer_conversions!(
[INFO] [stdout]     |  _________________________________-
[INFO] [stdout] 112 | |                         var.sz,
[INFO] [stdout] 113 | |                         num,
[INFO] [stdout] 114 | |                         var_type_decl.name,
[INFO] [stdout] ...   |
[INFO] [stdout] 118 | |                         (8, u64)
[INFO] [stdout] 119 | |                     );
[INFO] [stdout]     | |_____________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `decl_integer_conversions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bpf-loader-lib` (lib test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fc92e286dc390f4abf09ca63216dda7592f5963ecc7aa15657819ec8859d8638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc92e286dc390f4abf09ca63216dda7592f5963ecc7aa15657819ec8859d8638", kill_on_drop: false }`
[INFO] [stdout] fc92e286dc390f4abf09ca63216dda7592f5963ecc7aa15657819ec8859d8638
