[INFO] updating cached repository https://github.com/samwho/rust-debugger
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f78dcfaf8cc1583aaef9235ec605c4164dbd0efe
[INFO] checking samwho/rust-debugger against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamwho%2Frust-debugger" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samwho/rust-debugger on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/samwho/rust-debugger
[INFO] finished tweaking git repo https://github.com/samwho/rust-debugger
[INFO] tweaked toml for git repo https://github.com/samwho/rust-debugger written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/samwho/rust-debugger already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 44614d4d5366fadf2fb8de6d327a870f6a9b9c621a153f7627f4f4297a54ef23
[INFO] running `"docker" "start" "-a" "44614d4d5366fadf2fb8de6d327a870f6a9b9c621a153f7627f4f4297a54ef23"`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking wasmparser v0.51.4
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling iced-x86 v1.1.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking gimli v0.20.0
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tui v0.9.1
[INFO] [stderr]     Checking os_type v2.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking object v0.18.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking rustyline v6.1.2
[INFO] [stderr]     Checking human-panic v1.0.3
[INFO] [stderr]     Checking rust-debugger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `symbol_for_pc`
[INFO] [stderr]    --> src/debugger/dwarf/mod.rs:180:5
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn symbol_for_pc(&self, pc: usize) -> Option<&Symbol> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stack`
[INFO] [stderr]    --> src/debugger/subordinate.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn stack(&self) -> &[usize] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pipe`
[INFO] [stderr]   --> src/sys/mod.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn pipe() -> Result<(File, File)> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dup2`
[INFO] [stderr]    --> src/sys/mod.rs:103:8
[INFO] [stderr]     |
[INFO] [stderr] 103 | pub fn dup2(from: RawFd, to: RawFd) -> Result<()> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `symbol_for_pc`
[INFO] [stderr]    --> src/debugger/dwarf/mod.rs:180:5
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn symbol_for_pc(&self, pc: usize) -> Option<&Symbol> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stack`
[INFO] [stderr]    --> src/debugger/subordinate.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn stack(&self) -> &[usize] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pipe`
[INFO] [stderr]   --> src/sys/mod.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn pipe() -> Result<(File, File)> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dup2`
[INFO] [stderr]    --> src/sys/mod.rs:103:8
[INFO] [stderr]     |
[INFO] [stderr] 103 | pub fn dup2(from: RawFd, to: RawFd) -> Result<()> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] running `"docker" "inspect" "44614d4d5366fadf2fb8de6d327a870f6a9b9c621a153f7627f4f4297a54ef23"`
[INFO] running `"docker" "rm" "-f" "44614d4d5366fadf2fb8de6d327a870f6a9b9c621a153f7627f4f4297a54ef23"`
[INFO] [stdout] 44614d4d5366fadf2fb8de6d327a870f6a9b9c621a153f7627f4f4297a54ef23