[INFO] fetching crate netmod-mem 0.4.0...
[INFO] checking netmod-mem-0.4.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate netmod-mem 0.4.0 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate netmod-mem 0.4.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netmod-mem 0.4.0
[INFO] finished tweaking crates.io crate netmod-mem 0.4.0
[INFO] tweaked toml for crates.io crate netmod-mem 0.4.0 written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded as-slice v0.1.5
[INFO] [stderr]   Downloaded postcard-cobs v0.1.5-pre
[INFO] [stderr]   Downloaded postcard v0.4.3
[INFO] [stderr]   Downloaded blake2 v0.8.1
[INFO] [stderr]   Downloaded generic-array v0.13.3
[INFO] [stderr]   Downloaded ratman-identity v0.6.2
[INFO] [stderr]   Downloaded conjoiner-engine v1.2.3
[INFO] [stderr]   Downloaded ratman-netmod v0.5.1
[INFO] [stderr]   Downloaded twox-hash v1.6.1
[INFO] [stderr]   Downloaded heapless v0.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86425be4a87b1f90f08d6fdcac8df7867f14ac4a11e8255a65419a0d24959fe5
[INFO] running `Command { std: "docker" "start" "-a" "86425be4a87b1f90f08d6fdcac8df7867f14ac4a11e8255a65419a0d24959fe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86425be4a87b1f90f08d6fdcac8df7867f14ac4a11e8255a65419a0d24959fe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86425be4a87b1f90f08d6fdcac8df7867f14ac4a11e8255a65419a0d24959fe5", kill_on_drop: false }`
[INFO] [stdout] 86425be4a87b1f90f08d6fdcac8df7867f14ac4a11e8255a65419a0d24959fe5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 128ac0acddc1ae6525d9b7c1af03da48774ab76e524a5521df7ba9486029508e
[INFO] running `Command { std: "docker" "start" "-a" "128ac0acddc1ae6525d9b7c1af03da48774ab76e524a5521df7ba9486029508e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
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[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking hash32 v0.1.1
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[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking twox-hash v1.6.1
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-process v1.2.0
[INFO] [stderr]     Checking async-std v1.10.0
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking ratman-identity v0.6.2
[INFO] [stderr]     Checking postcard v0.4.3
[INFO] [stderr]     Checking conjoiner-engine v1.2.3
[INFO] [stderr]     Checking ratman-netmod v0.5.1
[INFO] [stderr]     Checking netmod-mem v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `link_raw`
[INFO] [stdout]   --> src/lib.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub(crate) fn link_raw(&mut self, io: io::Io) {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `link_raw`
[INFO] [stdout]   --> src/lib.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub(crate) fn link_raw(&mut self, io: io::Io) {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.51s
[INFO] running `Command { std: "docker" "inspect" "128ac0acddc1ae6525d9b7c1af03da48774ab76e524a5521df7ba9486029508e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128ac0acddc1ae6525d9b7c1af03da48774ab76e524a5521df7ba9486029508e", kill_on_drop: false }`
[INFO] [stdout] 128ac0acddc1ae6525d9b7c1af03da48774ab76e524a5521df7ba9486029508e