[INFO] fetching crate lucetc 0.6.1...
[INFO] checking lucetc-0.6.1 against try#d85a7505e49363642b460e105973798063a683b4 for pr-103914
[INFO] extracting crate lucetc 0.6.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lucetc 0.6.1 on toolchain d85a7505e49363642b460e105973798063a683b4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d85a7505e49363642b460e105973798063a683b4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lucetc 0.6.1
[INFO] finished tweaking crates.io crate lucetc 0.6.1
[INFO] tweaked toml for crates.io crate lucetc 0.6.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate lucetc 0.6.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d85a7505e49363642b460e105973798063a683b4" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+d85a7505e49363642b460e105973798063a683b4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fae88767ca59bc89f32783d4515ef1d66bb6f456b1113abaa274dfdd12fabf2
[INFO] running `Command { std: "docker" "start" "-a" "0fae88767ca59bc89f32783d4515ef1d66bb6f456b1113abaa274dfdd12fabf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fae88767ca59bc89f32783d4515ef1d66bb6f456b1113abaa274dfdd12fabf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fae88767ca59bc89f32783d4515ef1d66bb6f456b1113abaa274dfdd12fabf2", kill_on_drop: false }`
[INFO] [stdout] 0fae88767ca59bc89f32783d4515ef1d66bb6f456b1113abaa274dfdd12fabf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+d85a7505e49363642b460e105973798063a683b4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92b0674a1689225e1ac92b5493fa8d04f86ee9accf5ccf2972f75e55521af230
[INFO] running `Command { std: "docker" "start" "-a" "92b0674a1689225e1ac92b5493fa8d04f86ee9accf5ccf2972f75e55521af230", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling packed_struct v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling target-lexicon v0.9.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking cranelift-entity v0.51.0
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking cranelift-bforest v0.51.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]    Compiling serde-big-array v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]    Compiling wabt-sys v0.7.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking wast v3.0.4
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking scrypt v0.2.0
[INFO] [stderr]     Checking wasmparser v0.39.3
[INFO] [stderr]     Checking parity-wasm v0.40.3
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking minisign v0.5.14
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]    Compiling lucetc v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking siphasher v0.3.1
[INFO] [stderr]     Checking xfailure v0.1.0
[INFO] [stderr]     Checking bimap v0.2.0
[INFO] [stderr]     Checking human-size v0.4.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.11
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]     Checking goblin v0.0.24
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]     Checking thiserror v1.0.11
[INFO] [stderr]     Checking witx v0.6.0
[INFO] [stderr]     Checking lucet-validate v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking string-interner v0.7.1
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking faerie v0.12.0
[INFO] [stderr]     Checking wabt v0.9.2
[INFO] [stderr]     Checking wasmonkey v0.1.9
[INFO] [stderr]    Compiling target-lexicon v0.8.1
[INFO] [stderr]    Compiling packed_struct_codegen v0.3.0
[INFO] [stderr]     Checking object v0.14.1
[INFO] [stderr]     Checking lucet-module v0.6.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.51.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.51.0
[INFO] [stderr]    Compiling cranelift-codegen v0.51.0
[INFO] [stderr]     Checking cranelift-module v0.51.0
[INFO] [stderr]     Checking cranelift-frontend v0.51.0
[INFO] [stderr]     Checking cranelift-native v0.51.0
[INFO] [stderr]     Checking cranelift-faerie v0.51.0
[INFO] [stderr]     Checking cranelift-wasm v0.51.0
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/function.rs:146:10
[INFO] [stdout]     |
[INFO] [stdout] 146 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/function.rs:146:10
[INFO] [stdout]     |
[INFO] [stdout] 146 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/load.rs:37:33
[INFO] [stdout]    |
[INFO] [stdout] 37 |             result.push_str(err.description());
[INFO] [stdout]    |                                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/load.rs:37:33
[INFO] [stdout]    |
[INFO] [stdout] 37 |             result.push_str(err.description());
[INFO] [stdout]    |                                 ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/output.rs:82:17
[INFO] [stdout]    |
[INFO] [stdout] 82 | /                 std::mem::replace::<FunctionSpec>(
[INFO] [stdout] 83 | |                     fn_spec,
[INFO] [stdout] 84 | |                     FunctionSpec::new(0, fn_spec.code_len(), 0, sink.sites.len() as u64),
[INFO] [stdout] 85 | |                 );
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/output.rs:82:17
[INFO] [stdout]    |
[INFO] [stdout] 82 | /                 std::mem::replace::<FunctionSpec>(
[INFO] [stdout] 83 | |                     fn_spec,
[INFO] [stdout] 84 | |                     FunctionSpec::new(0, fn_spec.code_len(), 0, sink.sites.len() as u64),
[INFO] [stdout] 85 | |                 );
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 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 44.21s
[INFO] running `Command { std: "docker" "inspect" "92b0674a1689225e1ac92b5493fa8d04f86ee9accf5ccf2972f75e55521af230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92b0674a1689225e1ac92b5493fa8d04f86ee9accf5ccf2972f75e55521af230", kill_on_drop: false }`
[INFO] [stdout] 92b0674a1689225e1ac92b5493fa8d04f86ee9accf5ccf2972f75e55521af230