[INFO] fetching crate lsm_engine 0.1.9...
[INFO] checking lsm_engine-0.1.9 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate lsm_engine 0.1.9 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate lsm_engine 0.1.9 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lsm_engine 0.1.9
[INFO] finished tweaking crates.io crate lsm_engine 0.1.9
[INFO] tweaked toml for crates.io crate lsm_engine 0.1.9 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 45 packages to latest compatible versions
[INFO] [stderr]       Adding binary-heap-plus v0.2.0 (available: v0.5.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (available: v0.2.15)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (available: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (available: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (available: v0.3.2)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded compare v0.1.0
[INFO] [stderr]   Downloaded binary-heap-plus v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ace41d45675761120c86b14c56f8ad60aef83547ec9b37b5a98f39a0a477386
[INFO] running `Command { std: "docker" "start" "-a" "4ace41d45675761120c86b14c56f8ad60aef83547ec9b37b5a98f39a0a477386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ace41d45675761120c86b14c56f8ad60aef83547ec9b37b5a98f39a0a477386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ace41d45675761120c86b14c56f8ad60aef83547ec9b37b5a98f39a0a477386", kill_on_drop: false }`
[INFO] [stdout] 4ace41d45675761120c86b14c56f8ad60aef83547ec9b37b5a98f39a0a477386
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f105801609a65bd459fa44e5dab0ec70f8e7ede098cb5b855ea0e2e2dba550ea
[INFO] running `Command { std: "docker" "start" "-a" "f105801609a65bd459fa44e5dab0ec70f8e7ede098cb5b855ea0e2e2dba550ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking compare v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking binary-heap-plus v0.2.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking lsm_engine v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `serde::export`
[INFO] [stdout]  --> src/kv.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::export::TryFrom;
[INFO] [stdout]   |            ^^^^^^ could not find `export` in `serde`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/sst.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]  --> src/kv.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `serde::export`
[INFO] [stdout]  --> src/kv.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::export::TryFrom;
[INFO] [stdout]   |            ^^^^^^ could not find `export` in `serde`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TOMBSTONE_VALUE`
[INFO] [stdout]    --> src/lib.rs:312:17
[INFO] [stdout]     |
[INFO] [stdout] 312 |     use crate::{TOMBSTONE_VALUE};
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/sst.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]  --> src/kv.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `KVPair: TryFrom<std::string::String>` is not satisfied
[INFO] [stdout]    --> src/sst.rs:277:13
[INFO] [stdout]     |
[INFO] [stdout] 277 |             KVPair::try_from(string.expect("the segment file should not be tampered with"))
[INFO] [stdout]     |             ^^^^^^ the trait `From<std::string::String>` is not implemented for `KVPair`, which is required by `KVPair: TryFrom<_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `std::string::String` to implement `Into<KVPair>`
[INFO] [stdout]     = note: required for `KVPair` to implement `TryFrom<std::string::String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `KVPair: From<std::string::String>` is not satisfied
[INFO] [stdout]    --> src/sst.rs:277:13
[INFO] [stdout]     |
[INFO] [stdout] 277 |             KVPair::try_from(string.expect("the segment file should not be tampered with"))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<std::string::String>` is not implemented for `KVPair`, which is required by `KVPair: TryFrom<std::string::String>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `std::string::String` to implement `Into<KVPair>`
[INFO] [stdout]     = note: required for `KVPair` to implement `TryFrom<std::string::String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lsm_engine` (lib) due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: the trait bound `KVPair: TryFrom<std::string::String>` is not satisfied
[INFO] [stdout]    --> src/sst.rs:277:13
[INFO] [stdout]     |
[INFO] [stdout] 277 |             KVPair::try_from(string.expect("the segment file should not be tampered with"))
[INFO] [stdout]     |             ^^^^^^ the trait `From<std::string::String>` is not implemented for `KVPair`, which is required by `KVPair: TryFrom<_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `std::string::String` to implement `Into<KVPair>`
[INFO] [stdout]     = note: required for `KVPair` to implement `TryFrom<std::string::String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `KVPair: From<std::string::String>` is not satisfied
[INFO] [stdout]    --> src/sst.rs:277:13
[INFO] [stdout]     |
[INFO] [stdout] 277 |             KVPair::try_from(string.expect("the segment file should not be tampered with"))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<std::string::String>` is not implemented for `KVPair`, which is required by `KVPair: TryFrom<std::string::String>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `std::string::String` to implement `Into<KVPair>`
[INFO] [stdout]     = note: required for `KVPair` to implement `TryFrom<std::string::String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lsm_engine` (lib test) due to 4 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f105801609a65bd459fa44e5dab0ec70f8e7ede098cb5b855ea0e2e2dba550ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f105801609a65bd459fa44e5dab0ec70f8e7ede098cb5b855ea0e2e2dba550ea", kill_on_drop: false }`
[INFO] [stdout] f105801609a65bd459fa44e5dab0ec70f8e7ede098cb5b855ea0e2e2dba550ea