[INFO] fetching crate serde_wxf 0.0.1...
[INFO] building serde_wxf-0.0.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate serde_wxf 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate serde_wxf 0.0.1
[INFO] finished tweaking crates.io crate serde_wxf 0.0.1
[INFO] tweaked toml for crates.io crate serde_wxf 0.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_wxf 0.0.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding wolfram_wxf v0.5.0 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wolfram_wxf v0.5.0
[INFO] [stderr]   Downloaded ndarray v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 132481610ed6fdf1a71fbbdfc647748d423c33a3acab17858a777fd275d3c33e
[INFO] running `Command { std: "docker" "start" "-a" "132481610ed6fdf1a71fbbdfc647748d423c33a3acab17858a777fd275d3c33e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "132481610ed6fdf1a71fbbdfc647748d423c33a3acab17858a777fd275d3c33e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132481610ed6fdf1a71fbbdfc647748d423c33a3acab17858a777fd275d3c33e", kill_on_drop: false }`
[INFO] [stdout] 132481610ed6fdf1a71fbbdfc647748d423c33a3acab17858a777fd275d3c33e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfbbcbc5ad596b32562f8f160b5c5549f404aa527d2311930575e6bffe16c96c
[INFO] running `Command { std: "docker" "start" "-a" "cfbbcbc5ad596b32562f8f160b5c5549f404aa527d2311930575e6bffe16c96c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling matrixmultiply v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling wolfram_wxf v0.5.0
[INFO] [stderr]    Compiling serde_wxf v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `Command { std: "docker" "inspect" "cfbbcbc5ad596b32562f8f160b5c5549f404aa527d2311930575e6bffe16c96c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfbbcbc5ad596b32562f8f160b5c5549f404aa527d2311930575e6bffe16c96c", kill_on_drop: false }`
[INFO] [stdout] cfbbcbc5ad596b32562f8f160b5c5549f404aa527d2311930575e6bffe16c96c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e5df094d9cc8eaf0be7b1912fef6e66227431f2a180fd71fb0ef17be815b235
[INFO] running `Command { std: "docker" "start" "-a" "5e5df094d9cc8eaf0be7b1912fef6e66227431f2a180fd71fb0ef17be815b235", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_wxf v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ser/sequence.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn end(mut self) -> Result<()> {
[INFO] [stdout]    |            ----^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "5e5df094d9cc8eaf0be7b1912fef6e66227431f2a180fd71fb0ef17be815b235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e5df094d9cc8eaf0be7b1912fef6e66227431f2a180fd71fb0ef17be815b235", kill_on_drop: false }`
[INFO] [stdout] 5e5df094d9cc8eaf0be7b1912fef6e66227431f2a180fd71fb0ef17be815b235