[INFO] cloning repository https://github.com/lyswifter/vfs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lyswifter/vfs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyswifter%2Fvfs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyswifter%2Fvfs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4de6b7efbe7f6590b4d5a4e2dbf76466f6033ffd
[INFO] checking lyswifter/vfs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyswifter%2Fvfs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lyswifter/vfs on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lyswifter/vfs
[INFO] finished tweaking git repo https://github.com/lyswifter/vfs
[INFO] tweaked toml for git repo https://github.com/lyswifter/vfs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lyswifter/vfs 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/rafalh/rust-fatfs`
[INFO] [stderr]  Downloading crates ...
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[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de7b148971e1accfe855a832cc81505707db8287c883b09e8c07c2828bc93dec
[INFO] running `Command { std: "docker" "start" "-a" "de7b148971e1accfe855a832cc81505707db8287c883b09e8c07c2828bc93dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7b148971e1accfe855a832cc81505707db8287c883b09e8c07c2828bc93dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7b148971e1accfe855a832cc81505707db8287c883b09e8c07c2828bc93dec", kill_on_drop: false }`
[INFO] [stdout] de7b148971e1accfe855a832cc81505707db8287c883b09e8c07c2828bc93dec
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69b30335c4d96cf7c7318fc8c0092a509e0d206ae1166a3a46809607109e46e4
[INFO] running `Command { std: "docker" "start" "-a" "69b30335c4d96cf7c7318fc8c0092a509e0d206ae1166a3a46809607109e46e4", kill_on_drop: false }`
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[INFO] [stderr]     Checking fatfs v0.4.0 (https://github.com/rafalh/rust-fatfs?rev=87fc1ed5074a32b4e0344fcdde77359ef9e75432#87fc1ed5)
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[INFO] [stderr]     Checking git-odb v0.28.0
[INFO] [stderr]     Checking git-repository v0.16.0
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[INFO] [stderr]     Checking serde_bytes v0.11.6
[INFO] [stderr]     Checking ic-types v0.3.0
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling serde_tokenstream v0.1.3
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]    Compiling num_enum v0.5.7
[INFO] [stderr]     Checking ic-cdk v0.4.0
[INFO] [stderr]    Compiling ic-cdk-macros v0.4.0
[INFO] [stderr]     Checking vfs v0.1.0 (/opt/rustwide/workdir/src/vfs)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/vfs/src/stable_memory.rs:157:34
[INFO] [stdout]     |
[INFO] [stdout] 157 |         read(self, buf).map_err(|e| io::Error::new(io::ErrorKind::Other, "oh no"))
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/vfs/src/stable_memory.rs:163:35
[INFO] [stdout]     |
[INFO] [stdout] 163 |         write(self, buf).map_err(|e| io::Error::new(io::ErrorKind::OutOfMemory, "oh no"))
[INFO] [stdout]     |                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/vfs/src/stable_memory.rs:157:34
[INFO] [stdout]     |
[INFO] [stdout] 157 |         read(self, buf).map_err(|e| io::Error::new(io::ErrorKind::Other, "oh no"))
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/vfs/src/stable_memory.rs:163:35
[INFO] [stdout]     |
[INFO] [stdout] 163 |         write(self, buf).map_err(|e| io::Error::new(io::ErrorKind::OutOfMemory, "oh no"))
[INFO] [stdout]     |                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/vfs/src/lib.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn init(path: String) {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bytes` is never used
[INFO] [stdout]   --> src/vfs/src/stable_memory.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn bytes() -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `bytes`, `capacity`, and `size` are never used
[INFO] [stdout]    --> src/vfs/src/stable_memory.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl StableMemory {
[INFO] [stdout]     | ----------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     pub fn bytes() -> Vec<u8> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn capacity() -> usize {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn size() -> u64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/vfs/src/lib.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn init(path: String) {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bytes` is never used
[INFO] [stdout]   --> src/vfs/src/stable_memory.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn bytes() -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `bytes`, `capacity`, and `size` are never used
[INFO] [stdout]    --> src/vfs/src/stable_memory.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl StableMemory {
[INFO] [stdout]     | ----------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     pub fn bytes() -> Vec<u8> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn capacity() -> usize {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn size() -> u64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.23s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.8
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "69b30335c4d96cf7c7318fc8c0092a509e0d206ae1166a3a46809607109e46e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b30335c4d96cf7c7318fc8c0092a509e0d206ae1166a3a46809607109e46e4", kill_on_drop: false }`
[INFO] [stdout] 69b30335c4d96cf7c7318fc8c0092a509e0d206ae1166a3a46809607109e46e4
[INFO] checking lyswifter/vfs against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyswifter%2Fvfs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lyswifter/vfs on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lyswifter/vfs
[INFO] finished tweaking git repo https://github.com/lyswifter/vfs
[INFO] tweaked toml for git repo https://github.com/lyswifter/vfs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lyswifter/vfs 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71b08dde0136ee0a43043c4fd28796e7dc982f703e1527aef9886e444d0a5c0c
[INFO] running `Command { std: "docker" "start" "-a" "71b08dde0136ee0a43043c4fd28796e7dc982f703e1527aef9886e444d0a5c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71b08dde0136ee0a43043c4fd28796e7dc982f703e1527aef9886e444d0a5c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71b08dde0136ee0a43043c4fd28796e7dc982f703e1527aef9886e444d0a5c0c", kill_on_drop: false }`
[INFO] [stdout] 71b08dde0136ee0a43043c4fd28796e7dc982f703e1527aef9886e444d0a5c0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72d8645ce811d959cd6389d9a0173f85a1001fd2a67d2b823cd7d8d5e91b95e0
[INFO] running `Command { std: "docker" "start" "-a" "72d8645ce811d959cd6389d9a0173f85a1001fd2a67d2b823cd7d8d5e91b95e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking human_format v1.0.3
[INFO] [stderr]     Checking bytesize v1.1.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking git-hash v0.9.5
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking prodash v19.0.1
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/miniz_oxide-0.5.3/src/inflate/core.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1107 | /         match state {
[INFO] [stdout] 1108 | |             Start => generate_state!(state, 'state_machine, {
[INFO] [stdout] 1109 | |                 l.bit_buf = 0;
[INFO] [stdout] 1110 | |                 l.num_bits = 0;
[INFO] [stdout] ...    |
[INFO] [stdout] 1639 | |             _ => break TINFLStatus::Failed,
[INFO] [stdout] 1640 | |         };
[INFO] [stdout]      | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling hashbrown v0.12.1
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `miniz_oxide` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "72d8645ce811d959cd6389d9a0173f85a1001fd2a67d2b823cd7d8d5e91b95e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72d8645ce811d959cd6389d9a0173f85a1001fd2a67d2b823cd7d8d5e91b95e0", kill_on_drop: false }`
[INFO] [stdout] 72d8645ce811d959cd6389d9a0173f85a1001fd2a67d2b823cd7d8d5e91b95e0