[INFO] cloning repository https://github.com/nrc/callgraph.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nrc/callgraph.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Fcallgraph.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Fcallgraph.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb4ed81106a5f03d3e82c410e7b9f961415dd3c1
[INFO] testing nrc/callgraph.rs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Fcallgraph.rs" "/workspace/builds/worker-44/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-44/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrc/callgraph.rs on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nrc/callgraph.rs
[INFO] finished tweaking git repo https://github.com/nrc/callgraph.rs
[INFO] tweaked toml for git repo https://github.com/nrc/callgraph.rs written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] crate git repo https://github.com/nrc/callgraph.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43bcefd4cae88164e0ee29e9124707187d5e79259da01f472806bc44ef427e61
[INFO] running `Command { std: "docker" "start" "-a" "43bcefd4cae88164e0ee29e9124707187d5e79259da01f472806bc44ef427e61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43bcefd4cae88164e0ee29e9124707187d5e79259da01f472806bc44ef427e61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43bcefd4cae88164e0ee29e9124707187d5e79259da01f472806bc44ef427e61", kill_on_drop: false }`
[INFO] [stdout] 43bcefd4cae88164e0ee29e9124707187d5e79259da01f472806bc44ef427e61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] beb23b2ef25925c5b654d1819499e4d99d55b9684227ea232c2eeb5977929414
[INFO] running `Command { std: "docker" "start" "-a" "beb23b2ef25925c5b654d1819499e4d99d55b9684227ea232c2eeb5977929414", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling callgraph v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `log`
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | extern crate log;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `callgraph` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "beb23b2ef25925c5b654d1819499e4d99d55b9684227ea232c2eeb5977929414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb23b2ef25925c5b654d1819499e4d99d55b9684227ea232c2eeb5977929414", kill_on_drop: false }`
[INFO] [stdout] beb23b2ef25925c5b654d1819499e4d99d55b9684227ea232c2eeb5977929414