[INFO] cloning repository https://github.com/augustt198/json-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/augustt198/json-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustt198%2Fjson-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustt198%2Fjson-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53f09b4fe8ed5cc8a91acf614f2284f974933502
[INFO] checking augustt198/json-rs against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustt198%2Fjson-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/augustt198/json-rs on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/augustt198/json-rs
[INFO] finished tweaking git repo https://github.com/augustt198/json-rs
[INFO] tweaked toml for git repo https://github.com/augustt198/json-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/augustt198/json-rs 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d0d2494fef7d5a220c392b6b07eed02458829a390e351e7781d3068b7bca8a2
[INFO] running `Command { std: "docker" "start" "-a" "8d0d2494fef7d5a220c392b6b07eed02458829a390e351e7781d3068b7bca8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d0d2494fef7d5a220c392b6b07eed02458829a390e351e7781d3068b7bca8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d0d2494fef7d5a220c392b6b07eed02458829a390e351e7781d3068b7bca8a2", kill_on_drop: false }`
[INFO] [stdout] 8d0d2494fef7d5a220c392b6b07eed02458829a390e351e7781d3068b7bca8a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d6edff3e87683e6deadbbb8d5258e19e98b81553abaa5246d60ed31f4d61ce9
[INFO] running `Command { std: "docker" "start" "-a" "9d6edff3e87683e6deadbbb8d5258e19e98b81553abaa5246d60ed31f4d61ce9", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> src/lib.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core, collections)]
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> src/lib.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core, collections)]
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]   --> src/lib.rs:32:30
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Some(self.source.as_slice().char_at(self.pos))
[INFO] [stdout]    |                              ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]   --> src/lib.rs:32:30
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Some(self.source.as_slice().char_at(self.pos))
[INFO] [stdout]    |                              ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]    --> src/lib.rs:159:29
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let ident_str = res.as_slice();
[INFO] [stdout]     |                             ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]    --> src/lib.rs:159:29
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let ident_str = res.as_slice();
[INFO] [stdout]     |                             ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]    --> src/lib.rs:189:27
[INFO] [stdout]     |
[INFO] [stdout] 189 |         let num_str = res.as_slice();
[INFO] [stdout]     |                           ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for struct `String` in the current scope
[INFO] [stdout]    --> src/lib.rs:189:27
[INFO] [stdout]     |
[INFO] [stdout] 189 |         let num_str = res.as_slice();
[INFO] [stdout]     |                           ^^^^^^^^ method not found in `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "9d6edff3e87683e6deadbbb8d5258e19e98b81553abaa5246d60ed31f4d61ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d6edff3e87683e6deadbbb8d5258e19e98b81553abaa5246d60ed31f4d61ce9", kill_on_drop: false }`
[INFO] [stdout] 9d6edff3e87683e6deadbbb8d5258e19e98b81553abaa5246d60ed31f4d61ce9
[INFO] checking augustt198/json-rs against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faugustt198%2Fjson-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/augustt198/json-rs on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/augustt198/json-rs
[INFO] finished tweaking git repo https://github.com/augustt198/json-rs
[INFO] tweaked toml for git repo https://github.com/augustt198/json-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/augustt198/json-rs 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbb36c8ce504c1d18771dd641147ad48d4e42eea7a44e67a78d9b031aaf6d014
[INFO] running `Command { std: "docker" "start" "-a" "fbb36c8ce504c1d18771dd641147ad48d4e42eea7a44e67a78d9b031aaf6d014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbb36c8ce504c1d18771dd641147ad48d4e42eea7a44e67a78d9b031aaf6d014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbb36c8ce504c1d18771dd641147ad48d4e42eea7a44e67a78d9b031aaf6d014", kill_on_drop: false }`
[INFO] [stdout] fbb36c8ce504c1d18771dd641147ad48d4e42eea7a44e67a78d9b031aaf6d014
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07ae8b4900ec2a44f13c9048a6d65e3be4ba25f4e3beccbf27bc0cfc060c3944
[INFO] running `Command { std: "docker" "start" "-a" "07ae8b4900ec2a44f13c9048a6d65e3be4ba25f4e3beccbf27bc0cfc060c3944", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "07ae8b4900ec2a44f13c9048a6d65e3be4ba25f4e3beccbf27bc0cfc060c3944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ae8b4900ec2a44f13c9048a6d65e3be4ba25f4e3beccbf27bc0cfc060c3944", kill_on_drop: false }`
[INFO] [stdout] 07ae8b4900ec2a44f13c9048a6d65e3be4ba25f4e3beccbf27bc0cfc060c3944