[INFO] fetching crate clarity-jupyter-kernel 0.4.0...
[INFO] checking clarity-jupyter-kernel-0.4.0 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate clarity-jupyter-kernel 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate clarity-jupyter-kernel 0.4.0
[INFO] finished tweaking crates.io crate clarity-jupyter-kernel 0.4.0
[INFO] tweaked toml for crates.io crate clarity-jupyter-kernel 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate clarity-jupyter-kernel 0.4.0 on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate clarity-jupyter-kernel 0.4.0 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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `clarity-jupyter-kernel` (manifest) generated 1 warning
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded error-chain v0.10.0
[INFO] [stderr]   Downloaded toml v0.2.1
[INFO] [stderr]   Downloaded metadeps v1.1.2
[INFO] [stderr]   Downloaded zmq-sys v0.11.0
[INFO] [stderr]   Downloaded thread_local v1.1.3
[INFO] [stderr]   Downloaded zmq v0.9.2
[INFO] [stderr]   Downloaded adler v0.2.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.24
[INFO] [stderr]   Downloaded dirs v2.0.2
[INFO] [stderr]   Downloaded serde_stacker v0.1.4
[INFO] [stderr]   Downloaded ripemd160 v0.8.0
[INFO] [stderr]   Downloaded stacker v0.1.13
[INFO] [stderr]   Downloaded dirs-next v1.0.2
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded hmac-drbg v0.2.0
[INFO] [stderr]   Downloaded arrayref v0.3.6
[INFO] [stderr]   Downloaded keccak v0.1.0
[INFO] [stderr]   Downloaded pico-args v0.3.4
[INFO] [stderr]   Downloaded addr2line v0.14.1
[INFO] [stderr]   Downloaded redox_users v0.3.5
[INFO] [stderr]   Downloaded quote v1.0.8
[INFO] [stderr]   Downloaded redox_syscall v0.2.4
[INFO] [stderr]   Downloaded getrandom v0.2.2
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded memchr v2.3.4
[INFO] [stderr]   Downloaded rustc-demangle v0.1.18
[INFO] [stderr]   Downloaded dirs-sys v0.3.5
[INFO] [stderr]   Downloaded psm v0.1.12
[INFO] [stderr]   Downloaded subtle v2.4.0
[INFO] [stderr]   Downloaded once_cell v1.5.2
[INFO] [stderr]   Downloaded json v0.11.15
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.1
[INFO] [stderr]   Downloaded rust-argon2 v0.8.3
[INFO] [stderr]   Downloaded rustyline v6.3.0
[INFO] [stderr]   Downloaded serde_derive v1.0.123
[INFO] [stderr]   Downloaded blake2b_simd v0.5.11
[INFO] [stderr]   Downloaded backtrace v0.3.56
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded cc v1.0.66
[INFO] [stderr]   Downloaded serde v1.0.123
[INFO] [stderr]   Downloaded unicode-segmentation v1.7.1
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded aho-corasick v0.7.15
[INFO] [stderr]   Downloaded object v0.23.0
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded libc v0.2.85
[INFO] [stderr]   Downloaded sha3 v0.8.2
[INFO] [stderr]   Downloaded clarity-repl v0.3.0
[INFO] [stderr]   Downloaded gimli v0.23.0
[INFO] [stderr]   Downloaded libsecp256k1 v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d
[INFO] running `Command { std: "docker" "start" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `clarity-jupyter-kernel` (manifest) generated 1 warning
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking pico-args v0.3.4
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking json v0.11.15
[INFO] [stderr]    Compiling psm v0.1.12
[INFO] [stderr]    Compiling stacker v0.1.13
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking dirs-next v1.0.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking hmac-drbg v0.2.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking ripemd160 v0.8.0
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rustyline v6.3.0
[INFO] [stderr]     Checking serde_stacker v0.1.4
[INFO] [stderr]     Checking clarity-repl v0.3.0
[INFO] [stderr]     Checking clarity-jupyter-kernel v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/main.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |             x => bail!("Unrecognised option {}", x),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_non_local_macros)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `bail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/main.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |             x => bail!("Unrecognised option {}", x),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_non_local_macros)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `bail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jupyter/core.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let (mut context, outputs) = CommandContext::new()?;
[INFO] [stdout]    |              ----^^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/jupyter/core.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |         mut context: CommandContext,
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jupyter/core.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let (mut context, outputs) = CommandContext::new()?;
[INFO] [stdout]    |              ----^^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/jupyter/core.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |         mut context: CommandContext,
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.58s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: clarity-jupyter-kernel v0.4.0 (/opt/rustwide/workdir), metadeps v1.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d", kill_on_drop: false }`
[INFO] [stdout] 90143d71f482fb5918873bcdb7bfddefd09465448426c887b59c41cc46b61c5d
