[INFO] fetching crate nannou-new 0.2.0...
[INFO] checking nannou-new-0.2.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate nannou-new 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate nannou-new 0.2.0
[INFO] finished tweaking crates.io crate nannou-new 0.2.0
[INFO] tweaked toml for crates.io crate nannou-new 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nannou-new 0.2.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nannou-new 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd39d592f2e034e0c591c5f654cfeafafad08d85d6b50fadecd77af4ac0a4ea1
[INFO] running `Command { std: "docker" "start" "-a" "dd39d592f2e034e0c591c5f654cfeafafad08d85d6b50fadecd77af4ac0a4ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd39d592f2e034e0c591c5f654cfeafafad08d85d6b50fadecd77af4ac0a4ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd39d592f2e034e0c591c5f654cfeafafad08d85d6b50fadecd77af4ac0a4ea1", kill_on_drop: false }`
[INFO] [stdout] dd39d592f2e034e0c591c5f654cfeafafad08d85d6b50fadecd77af4ac0a4ea1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b71ecd0d913241bb04305702046d621c1232a81ca9bf666db238ee687f0ba3e1
[INFO] running `Command { std: "docker" "start" "-a" "b71ecd0d913241bb04305702046d621c1232a81ca9bf666db238ee687f0ba3e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]     Checking writeable v0.5.5
[INFO] [stderr]     Checking litemap v0.7.4
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]     Checking icu_locid_transform_data v1.5.0
[INFO] [stderr]     Checking icu_properties_data v1.5.0
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[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking icu_normalizer_data v1.5.0
[INFO] [stderr]     Checking utf16_iter v1.0.5
[INFO] [stderr]    Compiling syn v1.0.109
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[INFO] [stderr]     Checking aho-corasick v1.1.3
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[INFO] [stderr]     Checking socket2 v0.5.8
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[INFO] [stderr]    Compiling zerofrom-derive v0.1.5
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking zerofrom v0.1.5
[INFO] [stderr]     Checking yoke v0.7.5
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking cargo-platform v0.1.9
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_ignored v0.1.10
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking crates-io v0.30.0
[INFO] [stderr]     Checking git2 v0.10.2
[INFO] [stderr]     Checking git2-curl v0.11.0
[INFO] [stderr]     Checking cargo v0.42.0
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cargo-0.42.0/src/cargo/util/flock.rs:241:49
[INFO] [stdout]     |
[INFO] [stdout] 241 |                 acquire(config, msg, &path, &|| f.try_lock_shared(), &|| {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^ expected `Result<(), Error>`, found `Result<(), TryLockError>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Result<_, std::io::Error>`
[INFO] [stdout]                found enum `Result<_, std::fs::TryLockError>`
[INFO] [stdout] help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
[INFO] [stdout]     |
[INFO] [stdout] 241 |                 acquire(config, msg, &path, &|| Ok(f.try_lock_shared()?), &|| {
[INFO] [stdout]     |                                                 +++                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b71ecd0d913241bb04305702046d621c1232a81ca9bf666db238ee687f0ba3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b71ecd0d913241bb04305702046d621c1232a81ca9bf666db238ee687f0ba3e1", kill_on_drop: false }`
[INFO] [stdout] b71ecd0d913241bb04305702046d621c1232a81ca9bf666db238ee687f0ba3e1