[INFO] fetching crate serde_json_v8 0.1.1...
[INFO] testing serde_json_v8-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate serde_json_v8 0.1.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate serde_json_v8 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_json_v8 0.1.1
[INFO] finished tweaking crates.io crate serde_json_v8 0.1.1
[INFO] tweaked toml for crates.io crate serde_json_v8 0.1.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90a04b6151db9a2c85ac357efa876a8c7d65f4f699703f70669c8b3eb27792de
[INFO] running `Command { std: "docker" "start" "-a" "90a04b6151db9a2c85ac357efa876a8c7d65f4f699703f70669c8b3eb27792de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90a04b6151db9a2c85ac357efa876a8c7d65f4f699703f70669c8b3eb27792de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90a04b6151db9a2c85ac357efa876a8c7d65f4f699703f70669c8b3eb27792de", kill_on_drop: false }`
[INFO] [stdout] 90a04b6151db9a2c85ac357efa876a8c7d65f4f699703f70669c8b3eb27792de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e463a37ad7ee1b7704f06b251bc69670d36bb9dbfce6c74f0cacfc5af9072228
[INFO] running `Command { std: "docker" "start" "-a" "e463a37ad7ee1b7704f06b251bc69670d36bb9dbfce6c74f0cacfc5af9072228", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling serde_json_v8 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:321:1
[INFO] [stdout]     |
[INFO] [stdout] 321 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` 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 2.61s
[INFO] running `Command { std: "docker" "inspect" "e463a37ad7ee1b7704f06b251bc69670d36bb9dbfce6c74f0cacfc5af9072228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e463a37ad7ee1b7704f06b251bc69670d36bb9dbfce6c74f0cacfc5af9072228", kill_on_drop: false }`
[INFO] [stdout] e463a37ad7ee1b7704f06b251bc69670d36bb9dbfce6c74f0cacfc5af9072228
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c99e3e609629e7c117b4493518972c97638b920cd5d0fbf8ad3517c861ee1fa
[INFO] running `Command { std: "docker" "start" "-a" "0c99e3e609629e7c117b4493518972c97638b920cd5d0fbf8ad3517c861ee1fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]    Compiling serde_stacker v0.1.4
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling rustfix v0.4.6
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:321:1
[INFO] [stdout]     |
[INFO] [stdout] 321 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling tester v0.6.0
[INFO] [stderr]    Compiling serde_json_v8 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:321:1
[INFO] [stdout]     |
[INFO] [stdout] 321 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.45s
[INFO] running `Command { std: "docker" "inspect" "0c99e3e609629e7c117b4493518972c97638b920cd5d0fbf8ad3517c861ee1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c99e3e609629e7c117b4493518972c97638b920cd5d0fbf8ad3517c861ee1fa", kill_on_drop: false }`
[INFO] [stdout] 0c99e3e609629e7c117b4493518972c97638b920cd5d0fbf8ad3517c861ee1fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7de0f5002b6ccf84248958587262c3bc0040e6e1687663e974bd9e024fe4a1c1
[INFO] running `Command { std: "docker" "start" "-a" "7de0f5002b6ccf84248958587262c3bc0040e6e1687663e974bd9e024fe4a1c1", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]    --> src/lib.rs:321:1
[INFO] [stderr]     |
[INFO] [stderr] 321 | #[macro_use]
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `serde_json_v8` (lib) generated 1 warning
[INFO] [stderr] warning: `serde_json_v8` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_json_v8-36489928a5fdfb24)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_json_v8
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 244) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 121) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 43) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/lib.rs - (line 213) ... ok
[INFO] [stdout] test src/lib.rs - (line 184) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 244) stdout ----
[INFO] [stdout] error[E0252]: the name `Deserialize` is defined multiple times
[INFO] [stdout]  --> src/lib.rs:246:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_derive::{Deserialize, Serialize};
[INFO] [stdout]   |                    ----------- previous import of the macro `Deserialize` here
[INFO] [stdout] 3 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^--
[INFO] [stdout]   |             |
[INFO] [stdout]   |             `Deserialize` reimported here
[INFO] [stdout]   |             help: remove unnecessary import
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Deserialize` must be defined only once in the macro namespace of this module
[INFO] [stdout] 
[INFO] [stdout] error[E0252]: the name `Serialize` is defined multiple times
[INFO] [stdout]  --> src/lib.rs:246:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_derive::{Deserialize, Serialize};
[INFO] [stdout]   |                                 --------- previous import of the macro `Serialize` here
[INFO] [stdout] 3 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |                          ^^^^^^^^^ `Serialize` reimported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Serialize` must be defined only once in the macro namespace of this module
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0252`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 121) stdout ----
[INFO] [stdout] error[E0252]: the name `Deserialize` is defined multiple times
[INFO] [stdout]  --> src/lib.rs:123:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_derive::{Deserialize, Serialize};
[INFO] [stdout]   |                    ----------- previous import of the macro `Deserialize` here
[INFO] [stdout] 3 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^--
[INFO] [stdout]   |             |
[INFO] [stdout]   |             `Deserialize` reimported here
[INFO] [stdout]   |             help: remove unnecessary import
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Deserialize` must be defined only once in the macro namespace of this module
[INFO] [stdout] 
[INFO] [stdout] error[E0252]: the name `Serialize` is defined multiple times
[INFO] [stdout]  --> src/lib.rs:123:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_derive::{Deserialize, Serialize};
[INFO] [stdout]   |                                 --------- previous import of the macro `Serialize` here
[INFO] [stdout] 3 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |                          ^^^^^^^^^ `Serialize` reimported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Serialize` must be defined only once in the macro namespace of this module
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0252`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 121)
[INFO] [stdout]     src/lib.rs - (line 244)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "7de0f5002b6ccf84248958587262c3bc0040e6e1687663e974bd9e024fe4a1c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7de0f5002b6ccf84248958587262c3bc0040e6e1687663e974bd9e024fe4a1c1", kill_on_drop: false }`
[INFO] [stdout] 7de0f5002b6ccf84248958587262c3bc0040e6e1687663e974bd9e024fe4a1c1