[INFO] cloning repository https://github.com/fallingyang/rust-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fallingyang/rust-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 994ce59eaba7989ec3f0e616662625726a70d21b
[INFO] checking fallingyang/rust-lab against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fallingyang/rust-lab on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fallingyang/rust-lab
[INFO] finished tweaking git repo https://github.com/fallingyang/rust-lab
[INFO] tweaked toml for git repo https://github.com/fallingyang/rust-lab written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/fallingyang/rust-lab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66efc808461ae2719cdaf773e2e33e505d76fc18bbfd33c24ca546021824c0de
[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" "66efc808461ae2719cdaf773e2e33e505d76fc18bbfd33c24ca546021824c0de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66efc808461ae2719cdaf773e2e33e505d76fc18bbfd33c24ca546021824c0de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66efc808461ae2719cdaf773e2e33e505d76fc18bbfd33c24ca546021824c0de", kill_on_drop: false }`
[INFO] [stdout] 66efc808461ae2719cdaf773e2e33e505d76fc18bbfd33c24ca546021824c0de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] 5213dfa2c1a6a2d3ecb6756e644236c24c9731dbcdae4a9a8da89ab8ef335144
[INFO] running `Command { std: "docker" "start" "-a" "5213dfa2c1a6a2d3ecb6756e644236c24c9731dbcdae4a9a8da89ab8ef335144", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
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[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]     Checking rustc-demangle v0.1.18
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[INFO] [stderr]    Compiling itertools v0.8.2
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[INFO] [stderr]    Compiling indexmap v1.6.0
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[INFO] [stderr]    Compiling num-integer v0.1.43
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
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[INFO] [stderr]     Checking yaml-rust v0.4.4
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[INFO] [stderr]    Compiling proc-macro2 v1.0.26
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[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking regex v1.4.1
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[INFO] [stderr]     Checking atoi v0.3.3
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[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
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[INFO] [stderr]     Checking atty v0.2.14
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[INFO] [stderr]     Checking clap v2.33.3
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[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking wat v1.0.27
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling wasmtime-runtime v0.20.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling nng-sys v1.4.0-rc.0
[INFO] [stderr]    Compiling quiche v0.6.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling scroll_derive v0.10.4
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking cranelift-entity v0.67.0
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking regalloc v0.0.30
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking nng v1.0.0
[INFO] [stderr]     Checking cranelift-bforest v0.67.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.67.0
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]     Checking object v0.21.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking file-per-thread-logger v0.1.4
[INFO] [stderr]     Checking tokio v0.3.2
[INFO] [stderr]     Checking mio-lab v0.1.0 (/opt/rustwide/workdir/mio-lab)
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> mio-lab/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::BitOr`
[INFO] [stdout]  --> mio-lab/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::BitOr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mio-serial v3.3.1
[INFO] [stdout] warning: constant is never used: `DATA`
[INFO] [stdout]  --> mio-lab/src/main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const DATA: &[u8] = b"Hello world!\n";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> mio-lab/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::BitOr`
[INFO] [stdout]  --> mio-lab/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::BitOr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA`
[INFO] [stdout]  --> mio-lab/src/main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const DATA: &[u8] = b"Hello world!\n";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing-subscriber v0.2.14
[INFO] [stderr]     Checking log4rs v1.0.0
[INFO] [stderr]     Checking type-info v0.1.0 (/opt/rustwide/workdir/type-info)
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]   --> type-info/src/main.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          ^^^^^^^^^ help: a derive macro with a similar name exists: `Deserialize`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.127/src/lib.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn derive_deserialize(input: TokenStream) -> TokenStream {
[INFO] [stdout]    | ------------------------------------------------------------ similarly named derive macro `Deserialize` defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider importing this derive macro:
[INFO] [stdout]            serde::Serialize
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking nng-lab v0.1.0 (/opt/rustwide/workdir/nng-lab)
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]   --> type-info/src/main.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 | #[derive(Serialize, Deserialize)]
[INFO] [stdout]    |          ^^^^^^^^^ help: a derive macro with a similar name exists: `Deserialize`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.127/src/lib.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn derive_deserialize(input: TokenStream) -> TokenStream {
[INFO] [stdout]    | ------------------------------------------------------------ similarly named derive macro `Deserialize` defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider importing this derive macro:
[INFO] [stdout]            serde::Serialize
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `type-info` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> nng-lab/src/main.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             subscriber(&String::from("127.0.0.1:8080"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5213dfa2c1a6a2d3ecb6756e644236c24c9731dbcdae4a9a8da89ab8ef335144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5213dfa2c1a6a2d3ecb6756e644236c24c9731dbcdae4a9a8da89ab8ef335144", kill_on_drop: false }`
[INFO] [stdout] 5213dfa2c1a6a2d3ecb6756e644236c24c9731dbcdae4a9a8da89ab8ef335144