[INFO] fetching crate conda-leaves 0.3.0...
[INFO] checking conda-leaves-0.3.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate conda-leaves 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate conda-leaves 0.3.0
[INFO] finished tweaking crates.io crate conda-leaves 0.3.0
[INFO] tweaked toml for crates.io crate conda-leaves 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate conda-leaves 0.3.0 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate conda-leaves 0.3.0 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.3.18
[INFO] [stderr]   Downloaded structopt-derive v0.4.11
[INFO] [stderr]   Downloaded env_logger v0.8.1
[INFO] [stderr]   Downloaded rayon-core v1.8.1
[INFO] [stderr]   Downloaded rayon v1.4.1
[INFO] [stderr]   Downloaded syn v1.0.39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca59e4e9f5885cb0f106907ebe1eac795daf9db60a600271b34b27c837aaea50
[INFO] running `Command { std: "docker" "start" "-a" "ca59e4e9f5885cb0f106907ebe1eac795daf9db60a600271b34b27c837aaea50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca59e4e9f5885cb0f106907ebe1eac795daf9db60a600271b34b27c837aaea50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca59e4e9f5885cb0f106907ebe1eac795daf9db60a600271b34b27c837aaea50", kill_on_drop: false }`
[INFO] [stdout] ca59e4e9f5885cb0f106907ebe1eac795daf9db60a600271b34b27c837aaea50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60531254e7b5f6ee4421f25191eb7cdfc743f1e20c8808529bc94b7fad934599
[INFO] running `Command { std: "docker" "start" "-a" "60531254e7b5f6ee4421f25191eb7cdfc743f1e20c8808529bc94b7fad934599", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling structopt-derive v0.4.11
[INFO] [stderr]     Checking structopt v0.3.18
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking conda-leaves v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `from_metadata_file` is never used
[INFO] [stdout]   --> src/metadata.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Metadata {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn from_metadata_file<'a, P>(path: &'a P) -> Result<Self, io::Error>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `split_and_take_n_elem` is never used
[INFO] [stdout]   --> src/utils.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(crate) fn split_and_take_n_elem<T: AsRef<str>>(string: &T, n: usize) -> Option<&str> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extract_version` is never used
[INFO] [stdout]   --> src/utils.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn extract_version<T: AsRef<str>>(text: T) -> Option<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/utils.rs:47:26
[INFO] [stdout]    |
[INFO] [stdout] 47 |         Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 47 |         Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/utils.rs:47:26
[INFO] [stdout]    |
[INFO] [stdout] 47 |         Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 47 |         Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.16s
[INFO] running `Command { std: "docker" "inspect" "60531254e7b5f6ee4421f25191eb7cdfc743f1e20c8808529bc94b7fad934599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60531254e7b5f6ee4421f25191eb7cdfc743f1e20c8808529bc94b7fad934599", kill_on_drop: false }`
[INFO] [stdout] 60531254e7b5f6ee4421f25191eb7cdfc743f1e20c8808529bc94b7fad934599
