[INFO] fetching crate tortuga 0.1.2...
[INFO] checking tortuga-0.1.2 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate tortuga 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tortuga 0.1.2 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tortuga 0.1.2
[INFO] finished tweaking crates.io crate tortuga 0.1.2
[INFO] tweaked toml for crates.io crate tortuga 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate tortuga 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasmparser v0.65.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a881da77396615a43602a1a05c629695a0c2504ad54a4f3883b01685a43a78f2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a881da77396615a43602a1a05c629695a0c2504ad54a4f3883b01685a43a78f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a881da77396615a43602a1a05c629695a0c2504ad54a4f3883b01685a43a78f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a881da77396615a43602a1a05c629695a0c2504ad54a4f3883b01685a43a78f2", kill_on_drop: false }`
[INFO] [stdout] a881da77396615a43602a1a05c629695a0c2504ad54a4f3883b01685a43a78f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a1b7bcf37f14c6150541d69455a8c0d4cd188d674041c30575d7c79f63c3d62
[INFO] running `Command { std: "docker" "start" "-a" "9a1b7bcf37f14c6150541d69455a8c0d4cd188d674041c30575d7c79f63c3d62", kill_on_drop: false }`
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[INFO] [stderr]    Compiling unicode-xid v0.2.1
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[INFO] [stderr]     Checking cfg-if v0.1.10
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[INFO] [stderr]    Compiling cranelift-codegen-shared v0.68.0
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[INFO] [stderr]    Compiling maybe-uninit v2.0.0
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[INFO] [stderr]     Checking dirs-sys-next v0.1.1
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[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]     Checking sha2 v0.8.2
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[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
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[INFO] [stderr]     Checking scroll v0.10.1
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[INFO] [stderr]     Checking object v0.21.1
[INFO] [stderr]     Checking cranelift-bforest v0.68.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.68.0
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]     Checking zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]    Compiling cranelift-codegen v0.68.0
[INFO] [stderr]     Checking cranelift-frontend v0.68.0
[INFO] [stderr]     Checking cranelift-native v0.68.0
[INFO] [stderr]     Checking cranelift-wasm v0.68.0
[INFO] [stderr]     Checking wasmtime-environ v0.21.0
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[INFO] [stderr]     Checking wasmtime-jit v0.21.0
[INFO] [stderr]     Checking wasmtime v0.21.0
[INFO] [stderr]     Checking tortuga v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/system/mod.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         for i in 1..10 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/queue.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn empty(&mut self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/queue.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new() -> Envelope {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/queue.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn empty(&mut self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/queue.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn new(capacity: usize) -> RingBufferQueue {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/system/mod.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn new(capacity: usize) -> System {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 21s
[INFO] running `Command { std: "docker" "inspect" "9a1b7bcf37f14c6150541d69455a8c0d4cd188d674041c30575d7c79f63c3d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a1b7bcf37f14c6150541d69455a8c0d4cd188d674041c30575d7c79f63c3d62", kill_on_drop: false }`
[INFO] [stdout] 9a1b7bcf37f14c6150541d69455a8c0d4cd188d674041c30575d7c79f63c3d62