[INFO] fetching crate mamba 0.3.0...
[INFO] checking mamba-0.3.0 against try#89c05fd3cc6404a13e1bd71450c6132a2755fa4b for pr-69741
[INFO] extracting crate mamba 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mamba 0.3.0 on toolchain 89c05fd3cc6404a13e1bd71450c6132a2755fa4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mamba 0.3.0
[INFO] finished tweaking crates.io crate mamba 0.3.0
[INFO] tweaked toml for crates.io crate mamba 0.3.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mamba 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "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] 941bd128df818c8506d802898e3602ad6fd6d167ac9845a7d191cd765156fdba
[INFO] running `"docker" "start" "-a" "941bd128df818c8506d802898e3602ad6fd6d167ac9845a7d191cd765156fdba"`
[INFO] [stderr]     Checking bytecount v0.3.2
[INFO] [stderr]     Checking wtf8 v0.0.3
[INFO] [stderr]     Checking unicode_names2 v0.2.2
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.4
[INFO] [stderr]     Checking nom v4.2.3
[INFO] [stderr]     Checking loggerv v0.7.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking nom_locate v0.3.1
[INFO] [stderr]     Checking escargot v0.3.1
[INFO] [stderr]     Checking assert_cmd v0.10.2
[INFO] [stderr]     Checking python-parser v0.1.0
[INFO] [stderr]     Checking mamba v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lex/token.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 | /         (match self {
[INFO] [stderr] 140 | |             Token::Id(id) => id.len(),
[INFO] [stderr] 141 | |             Token::Real(real) => real.len(),
[INFO] [stderr] 142 | |             Token::Int(int) => int.len(),
[INFO] [stderr] ...   |
[INFO] [stderr] 148 | |             other => format!("{}", other).len()
[INFO] [stderr] 149 | |         } as i32)
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 139 |         match self {
[INFO] [stderr] 140 |             Token::Id(id) => id.len(),
[INFO] [stderr] 141 |             Token::Real(real) => real.len(),
[INFO] [stderr] 142 |             Token::Int(int) => int.len(),
[INFO] [stderr] 143 |             Token::Bool(true) => 4,
[INFO] [stderr] 144 |             Token::Bool(false) => 5,
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lex/token.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 | /         (match self {
[INFO] [stderr] 140 | |             Token::Id(id) => id.len(),
[INFO] [stderr] 141 | |             Token::Real(real) => real.len(),
[INFO] [stderr] 142 | |             Token::Int(int) => int.len(),
[INFO] [stderr] ...   |
[INFO] [stderr] 148 | |             other => format!("{}", other).len()
[INFO] [stderr] 149 | |         } as i32)
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 139 |         match self {
[INFO] [stderr] 140 |             Token::Id(id) => id.len(),
[INFO] [stderr] 141 |             Token::Real(real) => real.len(),
[INFO] [stderr] 142 |             Token::Int(int) => int.len(),
[INFO] [stderr] 143 |             Token::Bool(true) => 4,
[INFO] [stderr] 144 |             Token::Bool(false) => 5,
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.11s
[INFO] running `"docker" "inspect" "941bd128df818c8506d802898e3602ad6fd6d167ac9845a7d191cd765156fdba"`
[INFO] running `"docker" "rm" "-f" "941bd128df818c8506d802898e3602ad6fd6d167ac9845a7d191cd765156fdba"`
[INFO] [stdout] 941bd128df818c8506d802898e3602ad6fd6d167ac9845a7d191cd765156fdba