[INFO] fetching crate Logging4Dummys 1.0.2...
[INFO] building Logging4Dummys-1.0.2 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate Logging4Dummys 1.0.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate Logging4Dummys 1.0.2 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate Logging4Dummys 1.0.2
[INFO] finished tweaking crates.io crate Logging4Dummys 1.0.2
[INFO] tweaked toml for crates.io crate Logging4Dummys 1.0.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "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 35 packages to latest compatible versions
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.8.23)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9358ae7dae5c833063a61f82d62ae00804c237dc308110e6b74571fc7530984
[INFO] running `Command { std: "docker" "start" "-a" "f9358ae7dae5c833063a61f82d62ae00804c237dc308110e6b74571fc7530984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9358ae7dae5c833063a61f82d62ae00804c237dc308110e6b74571fc7530984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9358ae7dae5c833063a61f82d62ae00804c237dc308110e6b74571fc7530984", kill_on_drop: false }`
[INFO] [stdout] f9358ae7dae5c833063a61f82d62ae00804c237dc308110e6b74571fc7530984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 109ec24c0c679747f5f3804051918ed6486dfbba318c3a6bb08793a48bd10df7
[INFO] running `Command { std: "docker" "start" "-a" "109ec24c0c679747f5f3804051918ed6486dfbba318c3a6bb08793a48bd10df7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling iana-time-zone v0.1.63
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling Logging4Dummys v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `Logging4Dummys` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `logging4_dummys`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `logMsg` should have a snake case name
[INFO] [stdout]   --> src/log.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn write_log(logMsg: String){
[INFO] [stdout]    |                  ^^^^^^ help: convert the identifier to snake case: `log_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.29s
[INFO] running `Command { std: "docker" "inspect" "109ec24c0c679747f5f3804051918ed6486dfbba318c3a6bb08793a48bd10df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109ec24c0c679747f5f3804051918ed6486dfbba318c3a6bb08793a48bd10df7", kill_on_drop: false }`
[INFO] [stdout] 109ec24c0c679747f5f3804051918ed6486dfbba318c3a6bb08793a48bd10df7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c35e196e1a01f3f1020dbccd01d921152bde706f58f162d4e19bd0139c68542
[INFO] running `Command { std: "docker" "start" "-a" "6c35e196e1a01f3f1020dbccd01d921152bde706f58f162d4e19bd0139c68542", kill_on_drop: false }`
[INFO] [stderr]    Compiling Logging4Dummys v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `Logging4Dummys` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `logging4_dummys`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `logMsg` should have a snake case name
[INFO] [stdout]   --> src/log.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn write_log(logMsg: String){
[INFO] [stdout]    |                  ^^^^^^ help: convert the identifier to snake case: `log_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `logMsg` should have a snake case name
[INFO] [stdout]   --> src/log.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn write_log(logMsg: String){
[INFO] [stdout]    |                  ^^^^^^ help: convert the identifier to snake case: `log_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "6c35e196e1a01f3f1020dbccd01d921152bde706f58f162d4e19bd0139c68542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c35e196e1a01f3f1020dbccd01d921152bde706f58f162d4e19bd0139c68542", kill_on_drop: false }`
[INFO] [stdout] 6c35e196e1a01f3f1020dbccd01d921152bde706f58f162d4e19bd0139c68542