[INFO] fetching crate bcc 0.0.33...
[INFO] checking bcc-0.0.33 against try#8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f for pr-114559
[INFO] extracting crate bcc 0.0.33 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate bcc 0.0.33 on toolchain 8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bcc 0.0.33
[INFO] finished tweaking crates.io crate bcc 0.0.33
[INFO] tweaked toml for crates.io crate bcc 0.0.33 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate bcc 0.0.33 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44e4899af3ad23f4200ea373f34da485d245bff346cc81c2bd98afac4068910d
[INFO] running `Command { std: "docker" "start" "-a" "44e4899af3ad23f4200ea373f34da485d245bff346cc81c2bd98afac4068910d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e4899af3ad23f4200ea373f34da485d245bff346cc81c2bd98afac4068910d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e4899af3ad23f4200ea373f34da485d245bff346cc81c2bd98afac4068910d", kill_on_drop: false }`
[INFO] [stdout] 44e4899af3ad23f4200ea373f34da485d245bff346cc81c2bd98afac4068910d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec2a4c147067b134524dce51db55accdaeb14547137408f4fe7fc26c41b9b473
[INFO] running `Command { std: "docker" "start" "-a" "ec2a4c147067b134524dce51db55accdaeb14547137408f4fe7fc26c41b9b473", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling bcc-sys v0.23.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.25.0
[INFO] [stderr]     Checking time v0.3.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking ctrlc v3.2.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]     Checking thiserror v1.0.34
[INFO] [stderr]     Checking bcc v0.0.33 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `cflags` is never read
[INFO] [stdout]   --> src/core/mod.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct BPF {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 84 |     cflags: Vec<CString>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BPF` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_fd` is never read
[INFO] [stdout]   --> src/core/kprobe/v0_9_0.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Kprobe {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 15 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Kprobe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_fd` is never read
[INFO] [stdout]   --> src/core/perf_event/v0_4_0.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct PerfEvent {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PerfEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code_fd` and `p` are never read
[INFO] [stdout]   --> src/core/raw_tracepoint/v0_6_0.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct RawTracepoint {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 12 |     name: CString,
[INFO] [stdout] 13 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 14 |     p: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawTracepoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code_fd` and `p` are never read
[INFO] [stdout]   --> src/core/tracepoint/v0_6_0.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Tracepoint {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     p: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tracepoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_fd` is never read
[INFO] [stdout]   --> src/core/uprobe/v0_17_0.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Uprobe {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 15 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Uprobe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `comm`, `pid`, `cpu`, `flags`, `timestamp`, and `msg` are never read
[INFO] [stdout]   --> src/utils/trace_print.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct PrintkItem {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 8  |     comm: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     pid: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 10 |     cpu: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 11 |     flags: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     timestamp: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 13 |     msg: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PrintkItem` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cflags` is never read
[INFO] [stdout]   --> src/core/mod.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct BPF {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 84 |     cflags: Vec<CString>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BPF` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_fd` is never read
[INFO] [stdout]   --> src/core/kprobe/v0_9_0.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Kprobe {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 15 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Kprobe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_fd` is never read
[INFO] [stdout]   --> src/core/perf_event/v0_4_0.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct PerfEvent {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PerfEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code_fd` and `p` are never read
[INFO] [stdout]   --> src/core/raw_tracepoint/v0_6_0.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct RawTracepoint {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 12 |     name: CString,
[INFO] [stdout] 13 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 14 |     p: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawTracepoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code_fd` and `p` are never read
[INFO] [stdout]   --> src/core/tracepoint/v0_6_0.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Tracepoint {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     p: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tracepoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_fd` is never read
[INFO] [stdout]   --> src/core/uprobe/v0_17_0.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Uprobe {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 15 |     code_fd: File,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Uprobe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `comm`, `pid`, `cpu`, `flags`, `timestamp`, and `msg` are never read
[INFO] [stdout]   --> src/utils/trace_print.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct PrintkItem {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 8  |     comm: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     pid: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 10 |     cpu: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 11 |     flags: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     timestamp: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 13 |     msg: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PrintkItem` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Event`, `SoftwareEvent`
[INFO] [stdout]  --> examples/bpf_dump_ins.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bcc::perf_event::{Event, SoftwareEvent};
[INFO] [stdout]   |                       ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PerfEventArray`, `PerfEvent`
[INFO] [stdout]  --> examples/bpf_dump_ins.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bcc::{PerfEvent, PerfEventArray, BPF};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `App`, `Arg`
[INFO] [stdout]  --> examples/bpf_dump_ins.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{App, Arg};
[INFO] [stdout]   |            ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> examples/bpf_dump_ins.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]   --> examples/bpf_dump_ins.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::{thread, time};
[INFO] [stdout]    |           ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SoftwareEvent`
[INFO] [stdout]  --> examples/memory.rs:5:30
[INFO] [stdout]   |
[INFO] [stdout] 5 | use bcc::perf_event::{Event, SoftwareEvent};
[INFO] [stdout]   |                              ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PerfEvent`
[INFO] [stdout]  --> examples/memory.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use bcc::{PerfEvent, PerfEventArray, BPF};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `runnable`
[INFO] [stdout]   --> examples/bpf_dump_ins.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn do_main(runnable: Arc<AtomicBool>) -> Result<(), BccError> {
[INFO] [stdout]    |            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_runnable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_SAMPLE_FREQ` is never used
[INFO] [stdout]   --> examples/memory.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DEFAULT_SAMPLE_FREQ: u64 = 99; // Hertz
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.53s
[INFO] running `Command { std: "docker" "inspect" "ec2a4c147067b134524dce51db55accdaeb14547137408f4fe7fc26c41b9b473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec2a4c147067b134524dce51db55accdaeb14547137408f4fe7fc26c41b9b473", kill_on_drop: false }`
[INFO] [stdout] ec2a4c147067b134524dce51db55accdaeb14547137408f4fe7fc26c41b9b473
